EXHIBIT 1
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AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G
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Each of the undersigned hereby affirms that it is individually eligible to use
Schedule 13G, and agrees that this Schedule 13G is filed on its behalf.
Dated: July 10, 2006
TRIBECA GLOBAL MANAGEMENT (ASIA) PTE. LTD.
By: /s/ ▇▇▇▇▇▇ ▇▇▇
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Name: ▇▇▇▇▇▇ ▇▇▇
Title: Secretary
TRIBECA GLOBAL MANAGEMENT (EUROPE) LTD
By: /s/ ▇▇▇▇▇▇ ▇▇▇
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Name: ▇▇▇▇▇▇ ▇▇▇
Title: Secretary
TRIBECA GLOBAL MANAGEMENT LLC
By: /s/ ▇▇▇▇▇▇ ▇▇▇
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Name: ▇▇▇▇▇▇ ▇▇▇
Title: Secretary
CITIGROUP INVESTMENTS INC.
By: /s/ ▇▇▇▇▇▇ ▇▇▇
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Name: ▇▇▇▇▇▇ ▇▇▇
Title: Director
CITIGROUP INC.
By: /s/ Riqueza ▇. ▇▇▇▇▇▇▇
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Name: Riqueza ▇. ▇▇▇▇▇▇▇
Title: Assistant Secretary