EXHIBIT 3

                                POWER OF ATTORNEY


Power of Attorney, dated as of January 7, 2002 for Waddell & Reed Financial
Services, Inc. filed as Exhibit 3 to the Waddell & Reed Financial, Inc. 13G/A
filed for American Healthways, Inc.on January 16, 2002, Accession Number
0000912057-02-001507 and incorporated herein by reference.

Power of Attorney, dated as of January 7, 2002 for Waddell & Reed, Inc.
filed as Exhibit 3 to the Waddell & Reed Financial, Inc. 13G/A filed for
American Healthways, Inc. on January 16, 2002, Accession Number
0000912057-02-001507 and incorporated herein by reference.

Power of Attorney, dated as of January 7, 2002 for Waddell & Reed
Investment Management Company Financial Services, Inc. filed as Exhibit 3
to the Waddell & Reed Financial, Inc. 13G/A filed for American Healthways,
Inc. on January 16, 2002, Accession Number 0000912057-02-001507 and
incorporated herein by reference.