| Members of Audit Committee | |
| J. Matthew Singleton, C.P.A. Chairman of Committee | Director |
| Kenneth M. Bate | Director |
| Mark H. Corrigan, M.D. | Director |
| Members of Compensation Committee | |
| Michael B. Wood, M.D. Chairman of Committee | Director |
| Walter R. Maupay Jr., M.B.A. | Director |
| Martin H. Soeters | Director |
| Members of Corporate Governance and Nominating Committee | |
| Walter R. Maupay Jr., M.B.A. Chairman of Committee | Director |
| Sylvie Grégoire, Pharm. D. | Director |
| Nancy J. Hutson, Ph.D. | Director |
| Members of Scientific Affairs Committee | |
| Martin Rosenberg, Ph.D. Chairman of Committee | Director |
| Mark H. Corrigan, M.D. | Director |
| Nancy J. Hutson, Ph.D. | Director |
| David W. Martin, Jr., M.D. | Director |
*In addition, the Board creates special committees on an as-needed basis.