JOINT FILING AGREEMENT
EXHIBIT
99.1
In
accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act
of
1934, as amended, we, the signatories of the statement on Schedule 13D to which
this joint filing agreement is attached, hereby agree that such statement is,
and any amendments thereto filed by any of us will be, filed on behalf of each
of us.
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Dated:
November 19, 2007
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By:
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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President
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Palo
Alto Investors, Inc.
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By:
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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President
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Palo
Alto Small Cap Master Fund, L.P.
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By
Palo Alto Investors, LLC, its general partner
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By
Palo Alto Investors, Inc., its managing member
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By:
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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President
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Micro
Cap Partners, L.P.
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By
Palo Alto Investors, LLC, its general partner
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By
Palo Alto Investors, Inc., its managing member
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By:
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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President
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UBTI
Free, L.P.
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By
Palo Alto Investors, LLC, its general partner
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By
Palo Alto Investors, Inc., its managing member
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By:
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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President
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XXXXXXX
X. XXXXXXX
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Name:
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Xxxxxxx
X. Xxxxxxx
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