|                                                           |     |
|----------------------------------------------------------------|--------------------|
|                                                           |               |
| /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/ Patrick                    Lacchia |          |
| Patrick                            Lacchia  |          |
| Director                                    |          |

|                                                                |     |
|---------------------------------------------------------------------|--------------------|
| /s/ A.                      Graeme                      Manson |          |
| A. Graeme Manson                                                    |          |
| Director                                                            |          |

|                                                    |         |
|---------------------------------------------------------|--------------|
| /s/ Kenneth                        M. Mackay, M.D. |    |
| Kenneth M. Mackay, M.D.                                 |    |
| Director                                                |    |

|                                               |     |
|----------------------------------------------------|--------------------|
|                                               |               |
|                                               |          |
| Christina                            M. J. Russell |          |
| Director                                           |

----