| Filed On | Filing |
|---|---|
| 09 May 2008 | SC 13D/A |
| 27 Jul 2007 | SC 13D/A |
| 22 Jan 1999 | SCHEDULE 13D |
| 22 Jan 1999 | SCHEDULE 13D/A |
| 27 May 1998 | AMENDMENT NO. 3 TO SCHEDULE 13D |
| 18 Dec 1997 | SCHEDULE 13D (AMENDMENT NO. 2) |
| 12 Dec 1997 | ALEXION PHARMACEUTICALS/US SURGICAL CORPORATION |
| 19 Sep 1997 | AMENDMENT NO. 1 TO SCHEDULE 13D |
| 25 Jul 1997 | AMENDMENT # 1 TO SCHEDULE 13D |
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