| *Signature*                                                                                              |   | *Title*                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  Samuel J. Russell                  Samuel                  J. Russell               |   | Chairman                  of the Board of Directors and Chief                  Executive                    Officer                                          |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  Barry J. Pardon                  Barry                  J. Pardon                   |   | President                  and Director                  (principal                    executive officer)                                                    |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  John Ian Durie                  John                  Ian Durie                     |   | Vice                  President (Finance) and Director                                                                                                       |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  Marshall W. Griffin, Jr.                  Marshall                  W. Griffin, Jr. |   | Chief                  Financial Officer, Treasurer and Secretary                  (principal                    financial and principal accounting officer) |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  A. Graeme Manson                  A.                  Graeme Manson                 |   | Director                                                                                                                                                     |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  Kenneth M. MacKay, M.D.                  Kenneth                  M. MacKay, M.D.   |   | Director                                                                                                                                                     |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  Christina M. J. Russell                  Christina                  M. J. Russell   |   | Director                                                                                                                                                     |
|                                                                                                     |   |                                                                                                                                                         |
|                                                                                                     |   |                                                                                                                                                         |
| /s/                  William J. Sim                  William                  J. Sim                     |   | Director                                                                                                                                                     |

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