EX-99.A 3 w64243aexv99wa.txt JOINT FILING STATEMENT EXHIBIT A JOINT FILING STATEMENT Pursuant to Rule 13d-1(f)(1), we, the undersigned, hereby express our agreement that the attached Schedule 13G (including all amendments thereto) is filed on behalf of each of the undersigned. BB BIOTECH AG Date: SEPTEMBER 26, 2002 By: /s/ Adrian Brungger ------------------------------- ------------------------------------------------------------ Signatory Authority Name: Adrian Brungger ------------------------------------------------------------ Title: SIGNATORY AUTHORITY ------------------------------------------------------------ Date: SEPTEMBER 26, 2002 By: /s/ Anders Hove ------------------------------- ------------------------------------------------------------ Signatory Authority Name: Anders Hove ------------------------------------------------------------ Title: SIGNATORY AUTHORITY ------------------------------------------------------------ BIOTECH TARGET N.V. Date: SEPTEMBER 26, 2002 By: /s/ Adrian Brungger ------------------------------- ------------------------------------------------------------ Signatory Authority Name: Adrian Brungger ------------------------------------------------------------ Title: SIGNATORY AUTHORITY ------------------------------------------------------------ Date: SEPTEMBER 26, 2002 By: /s/ Anders Hove ------------------------------- ------------------------------------------------------------ Signatory Authority Name: Anders Hove ------------------------------------------------------------ Title: SIGNATORY AUTHORITY ------------------------------------------------------------