-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, IU8vkPDZvqu2rVaK7Qig9mWORW+pS2FT1zH90cR+B08f2g8g2SRgP4zfAEizd056 +vw19xYpk3phLmGPkLa/eg== 0000902664-06-002214.txt : 20060927 0000902664-06-002214.hdr.sgml : 20060927 20060927110657 ACCESSION NUMBER: 0000902664-06-002214 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20060927 DATE AS OF CHANGE: 20060927 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Echo Healthcare Acquisition Corp. CENTRAL INDEX KEY: 0001331931 STANDARD INDUSTRIAL CLASSIFICATION: BLANK CHECKS [6770] IRS NUMBER: 562517815 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-81685 FILM NUMBER: 061110361 BUSINESS ADDRESS: STREET 1: 8000 TOWERS CRESCENT DRIVE, SUITE 1300 CITY: VIENNA STATE: VA ZIP: 22182 BUSINESS PHONE: 703-448-7688 MAIL ADDRESS: STREET 1: 8000 TOWERS CRESCENT DRIVE, SUITE 1300 CITY: VIENNA STATE: VA ZIP: 22182 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: D.B. ZWIRN & CO., L.P. CENTRAL INDEX KEY: 0001243310 IRS NUMBER: 020597442 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 745 FIFTH AVENUE STREET 2: 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10151 BUSINESS PHONE: 646-720-9100 MAIL ADDRESS: STREET 1: 745 FIFTH AVENUE STREET 2: 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10151 FORMER COMPANY: FORMER CONFORMED NAME: HIGHBRIDGE ZWIRN CAPITAL MANAGEMENT LLC DATE OF NAME CHANGE: 20030717 FORMER COMPANY: FORMER CONFORMED NAME: HIGHBRIDGE/ZWIRN CAPITAL MANAGEMENT LLC DATE OF NAME CHANGE: 20030618 SC 13G 1 sc13g.txt ECHO HEALTHCARE ACQUISITION CORP. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 Echo Healthcare Acquisition Corp. ------------------------------------------------------ (Name of Issuer) Common Stock, par value $0.0001 per share ------------------------------------------------------ (Title of Class of Securities) 27876C107 ------------------------------------------------------ (CUSIP NUMBER) September 5, 2006 ------------------------------------------------------ (Date of event which requires filing of this statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the notes). Page 1 of 14 Pages CUSIP No. 27876C107 13G Page 2 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn & Co., L.P. 20-0597442 - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 475,000 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 475,000 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 475,000 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.43% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** PN - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 3 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn Special Opportunities Fund, Ltd. - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 282,340 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 282,340 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 282,340 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.23% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** CO - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 4 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn Special Opportunities Fund, L.P. 73-1637217 - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 159,410 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 159,410 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 159,410 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.82% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** PN - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 5 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn Special Opportunities Fund (TE), L.P. - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 33,250 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 33,250 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 33,250 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.38% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** PN - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 6 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS DBZ GP, LLC 42-1657316 - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 475,000 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 475,000 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 475,000 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.43% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** OO - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 7 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS Zwirn Holdings, LLC 30-0080444 - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 475,000 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 475,000 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 475,000 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.43% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** OO - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 8 of 14 Pages - ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS Daniel B. Zwirn - ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] - ----------------------------------------------------------------------- (3) SEC USE ONLY - ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION United States - ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 475,000 OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 475,000 - ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 475,000 - ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] - ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.43% - ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** IN - ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 27876C107 13G Page 9 of 14 Pages Item 1. (a) Name of Issuer Echo Healthcare Acquisition Corp. (the "Issuer") (b) Address of Issuer's Principal Executive Offices: 8000 Towers Crescent Drive, Suite 1300 Vienna, VA 22182 Item 2(a). Name of Person Filing Item 2(b). Address of Principal Business Office Item 2(c). Citizenship D.B. Zwirn & Co, L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: Delaware D.B. Zwirn Special Opportunities Fund, L.P. c/o D.B. Zwirn & Co., L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: Delaware D.B. Zwirn Special Opportunities Fund (TE), L.P. c/o D.B. Zwirn & Co., L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: Delaware D.B. Zwirn Special Opportunities Fund, Ltd. c/o Goldman Sachs (Cayman) Trust, Limited P.O. Box 896 George Town Harbour Centre, 2nd Floor Grand Cayman, Cayman Islands British West Indies Citizenship: Cayman Islands, British West Indies DBZ GP, LLC c/o D.B. Zwirn & Co., L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: Delaware Zwirn Holdings, LLC c/o D.B. Zwirn & Co., L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: Delaware Daniel B. Zwirn c/o D.B. Zwirn & Co., L.P. 745 Fifth Avenue, 18th Floor New York, NY 10151 Citizenship: United States CUSIP No. 27876C107 13G Page 10 of 14 Pages (d) Title of Class of Securities Common Shares, par value $0.0001 per share ("Shares") (e) CUSIP Number 27876C107 Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check whether the person filing is a: (a) [ ] Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o). (b) [ ] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c). (c) [ ] Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c). (d) [ ] Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) [ ] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [ ] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i) [ ] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). If this statement is filed pursuant to Rule 13d-1(c), check this box. [x] Item 4. Ownership (a) Amount Beneficially Owned As of the date of this filing, D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn may each be deemed the beneficial owner of (i) 159,410 Shares owned by D.B. Zwirn Special Opportunities Fund, L.P., (ii) 282,340 Shares owned by D.B. Zwirn Special Opportunities Fund, Ltd. and (iii) 33,250 Shares owned by D.B. Zwirn Special Opportunities Fund (TE), L.P. (each entity referred to in (i) through (iii) is herein referred to as a "Fund" and, collectively, as the "Funds"). D.B. Zwirn & Co., L.P. is the manager of each of the Funds, and consequently has voting control and investment discretion over the Shares held by each of the Funds. Daniel B. Zwirn is the managing member of and thereby controls Zwirn Holdings, LLC, which in turn is the managing member of and thereby controls DBZ GP, LLC, which in turn is the general partner of and CUSIP No. 27876C107 13G Page 11 of 14 Pages thereby controls D.B. Zwirn & Co., L.P. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Shares owned by another Reporting Person. In addition, each of D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn disclaims beneficial ownership of the Shares held by the Funds. (b) Percent of Class Based upon the Issuer's quarterly report on form 10-Q/A filed on August 23, 2006, there were 8,750,000 Shares outstanding as of May 8, 2006. Therefore, (i) D.B. Zwirn Special Opportunities Fund, L.P. owns approximately 1.82% of the outstanding Shares, (ii) D.B. Zwirn Special Opportunities Fund, Ltd. owns approximately 3.23% of the outstanding Shares, (iii) D.B. Zwirn Special Opportunities Fund (TE), L.P. owns approximately 0.38% of the outstanding Shares and (iv) each of D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn may be deemed to beneficially own 5.43% of the outstanding Shares. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Shares owned by another Reporting Person. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: See Item 4(a) (ii) Shared power to vote or to direct the vote See Item 4(a) (iii) Sole power to dispose or to direct the disposition of See Item 4(a) (iv) Shared power to dispose or to direct the disposition of See Item 4(a) Item 5. Ownership of Five Percent or Less of a Class Not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company Not applicable. Item 8. Identification and Classification of Members of the Group See Exhibit I. Item 9. Notice of Dissolution of Group CUSIP No. 27876C107 13G Page 12 of 14 Pages Not applicable Item 10. Certification By signing below each of the undersigned certifies that, to the best of its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. Exhibits: Exhibit I: Joint Filing Agreement, dated as of September 27, 2006, by and among D.B. Zwirn Special Opportunities Fund, L.P., D.B. Zwirn Special Opportunities Fund, Ltd., D.B. Zwirn Special Opportunities Fund (TE), L.P., D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn. CUSIP No. 27876C107 13G Page 13 of 14 Pages SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information with respect to it set forth in this statement is true, complete, and correct. Dated: September 27, 2006 D.B. ZWIRN SPECIAL OPPORTUNITIES D.B. ZWIRN SPECIAL OPPORTUNITIES FUND, L.P. FUND, LTD. By: D.B. Zwirn & Co., L.P. By: D.B. Zwirn & Co., L.P. By: DBZ GP, LLC, By: DBZ GP, LLC, its General Partner its General Partner By: Zwirn Holdings, LLC, By: Zwirn Holdings, LLC, its Managing Member its Managing Member By: /s/ Daniel B. Zwirn By: /s/ Daniel B. Zwirn ----------------------- ------------------------------ Name: Daniel B. Zwirn Name: Daniel B. Zwirn Title: Managing Member Title: Managing Member D.B. ZWIRN SPECIAL OPPORTUNITIES FUND D.B. ZWIRN & CO., L.P. (TE), L.P. By: DBZ GP, LLC, By: D.B. Zwirn & Co., L.P. its General Partner By: DBZ GP, LLC, By: Zwirn Holdings, LLC, its General Partner its Managing Member By: Zwirn Holdings, LLC, its Managing Member By: /s/ Daniel B. Zwirn ----------------------------- By: /s/ Daniel B. Zwirn Name: Daniel B. Zwirn --------------------------- Title: Managing Member Name: Daniel B. Zwirn Title: Managing Member DBZ GP, LLC ZWIRN HOLDINGS, LLC By: Zwirn Holdings, LLC, its Managing Member By: /s/ Daniel B. Zwirn ---------------------------- Name: Daniel B. Zwirn By: /s/ Daniel B. Zwirn Title: Managing Member ------------------------------------ Name: Daniel B. Zwirn Title: Managing Member /s/ Daniel B. Zwirn - ---------------------------- DANIEL B. ZWIRN CUSIP No. 27876C107 13G Page 14 of 14 Pages EXHIBIT I JOINT FILING AGREEMENT This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the common stock of Echo Healthcare Acquisition Corp. is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Dated: September 27, 2006 D.B. ZWIRN SPECIAL OPPORTUNITIES D.B. ZWIRN SPECIAL OPPORTUNITIES FUND, L.P. FUND, LTD. By: D.B. Zwirn & Co., L.P. By: D.B. Zwirn & Co., L.P. By: DBZ GP, LLC, By: DBZ GP, LLC, its General Partner its General Partner By: Zwirn Holdings, LLC, By: Zwirn Holdings, LLC, its Managing Member its Managing Member By: /s/ Daniel B. Zwirn By: /s/ Daniel B. Zwirn ----------------------- ------------------------------ Name: Daniel B. Zwirn Name: Daniel B. Zwirn Title: Managing Member Title: Managing Member D.B. ZWIRN SPECIAL OPPORTUNITIES FUND D.B. ZWIRN & CO., L.P. (TE), L.P. By: DBZ GP, LLC, By: D.B. Zwirn & Co., L.P. its General Partner By: DBZ GP, LLC, By: Zwirn Holdings, LLC, its General Partner its Managing Member By: Zwirn Holdings, LLC, its Managing Member By: /s/ Daniel B. Zwirn ----------------------------- By: /s/ Daniel B. Zwirn Name: Daniel B. Zwirn --------------------------- Title: Managing Member Name: Daniel B. Zwirn Title: Managing Member DBZ GP, LLC ZWIRN HOLDINGS, LLC By: Zwirn Holdings, LLC, its Managing Member By: /s/ Daniel B. Zwirn ---------------------------- Name: Daniel B. Zwirn By: /s/ Daniel B. Zwirn Title: Managing Member ------------------------------------ Name: Daniel B. Zwirn Title: Managing Member /s/ Daniel B. Zwirn - ---------------------------- DANIEL B. ZWIRN -----END PRIVACY-ENHANCED MESSAGE-----