EXHIBIT 1
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                      IDENTIFICATION AND CLASSIFICATION OF SUBSIDIARIES WHICH ACQUIRED SECURITIES
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                      Smith Barney Fund Management LLC and Salomon Brothers Asset Management Inc.,
                                       investment advisers in accordance with
                                           Section 240.13d -1(b) (1)(ii)(E)


                      The undersigned hereby affirms the identification and Item 3
                      classification of the subsidiaries which acquired the securities filed
                                           for in this Schedule 13G.



                    Date:  February 12, 2004


                                          CITIGROUP INC.


                                          By: /s/ Serena D. Moe
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                                               Name:  Serena D. Moe
                                               Title: Assistant Secretary