Exhibit 1
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Joint Filing Agreement
Joint Filing Agreement
The undersigned hereby agree that the statement on Schedule 13D filed by
the undersigned with respect to the Common Stock, $0.001 par value is, and any
amendment thereto signed by each of the undersigned shall be, filed on behalf of
each undersigned pursuant to and in accordance with the provisions of Rule
13d-1(k) under the Securities Exchange Act of 1934, as amended.
Dated: May 23, 2001 WARBURG, ▇▇▇▇▇▇ & CO.
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Attorney-in-Fact
Dated: May 23, 2001 WARBURG PINCUS LLC
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Attorney-in-Fact
Dated: May 23, 2001 WARBURG, ▇▇▇▇▇▇ VENTURES, L.P.
By: Warburg, ▇▇▇▇▇▇ & Co.,
General Partner
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Attorney-in-Fact
