AGREEMENT OF GALEN PARTNERS III, L.P., GALEN PARTNERS INTERNATIONAL III, L.P. AND GALEN EMPLOYEE FUND III, L.P. PURSUANT TO RULE 13D-1(F) ------------------------- The undersigned hereby agree that the Statement on Schedule 13D to which this Agreement...

                                                            EXHIBIT A


                                    AGREEMENT
                                       OF
                            XXXXX PARTNERS III, L.P.,
                     XXXXX PARTNERS INTERNATIONAL III, L.P.
                                       AND
                          XXXXX EMPLOYEE FUND III, L.P.
                            PURSUANT TO RULE 13D-1(F)
                            -------------------------


          The undersigned hereby agree that the Statement on Schedule 13D to
which this Agreement is annexed as Exhibit A is filed on behalf of each of them
in accordance with the provisions of Rule 13d-1(f) under the Securities Exchange
Act of 1934, as amended.

                                   XXXXX PARTNERS III, L.P.
                                   By: Claudius, L.L.C., its
                                   General Partner


                                   By    /s/ Xxxxx X. Xxxxxx
                                     ----------------------------
                                          Managing Member


                                   XXXXX PARTNERS INTERNATIONAL III, L.P.
                                   By: Claudius, L.L.C., its
                                   General Partner


                                   By    /s/ Xxxxx X. Xxxxxx
                                     ----------------------------
                                          Managing Member

                                   XXXXX EMPLOYEE FUND III, L.P.
                                   By: Wesson Enterprises, Inc.,
                                   its General Partner


                                   By  /s/ Xxxxx X. Xxxxxx
                                     ----------------------------
                                          President