0001104659-03-029286 Sample Contracts

Exhibit A

Amendment to Schedule 13d • December 29th, 2003 • Oak Management Corp • Services-specialty outpatient facilities, nec

• Contract Type
  Amendment to Schedule 13d
• Filed
  December 29th, 2003
• Company
  Oak Management Corp
• Industry
  Services-specialty outpatient facilities, nec

Each of the undersigned hereby agrees that the Amendment No. 4 to Schedule 13D filed on the date hereof with respect to the shares of Common Stock of Psychiatric Solutions, Inc. has been filed on behalf of the undersigned.