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 of the undersigned pursuant to and in accordance with the provisions of
Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.
Dated: March 19, 2001 WARBURG, XXXXXX & CO.
By: /s/ Xxxxxx X. Xxxxxxxxx
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Name: Xxxxxx X. Xxxxxxxxx
Title: Partner
Dated: March 19, 2001 X.X. XXXXXXX, XXXXXX & CO., LLC
By: /s/ Xxxxxx X. Xxxxxxxxx
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Name: Xxxxxx X. Xxxxxxxxx
Title: Member
Dated: March 19, 2001 WARBURG, XXXXXX VENTURES, L.P.
By: Warburg, Xxxxxx & Co.,
General Partner
By: /s/ Xxxxxx X. Xxxxxxxxx
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Name: Xxxxxx X. Xxxxxxxxx
Title: Partner
