 | | | |  | | Name : | Clay B. Siegall | | Title : | Interim Chairman of the Board, President, Chief Executive Officer | | Since: | 12/1997 |
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|  | | Name : | Todd Simpson | | Title : | Chief Financial Officer | | Since: | 10/04/2005 |
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|  | | Name : | Morris Z. Rosenberg | | Title : | Senior Vice President - Development | | Since: | 07/10/2001 |
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|  | | Name : | Eric L. Dobmeier | | Title : | Chief Business Officer | | Since: | 03/2002 |
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| | | Name : | Thomas C. Reynolds | | Title : | Chief Medical Officer | | Since: | 03/2007 |
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| | | | | | | 2007 | | | | 6th February 2007 | | 24th April 2007 | | 13th June 2007 | | 25th July 2007 | | 23rd October 2007 |
| | 2006 | | | | 25th April 2006 | | 25th July 2006 | | | | | | |
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