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Date: February 14, 2018
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TANG CAPITAL PARTNERS, LP
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By:
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Tang Capital Management, LLC
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Its:
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General Partner
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By:
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/s/ Kevin C. Tang
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Name:
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Kevin C. Tang
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Title:
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Manager
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TANG CAPITAL MANAGEMENT, LLC
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By:
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/s/ Kevin C. Tang
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Name:
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Kevin C. Tang
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Title:
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Manager
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/s/ Kevin C. Tang
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Name:
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Kevin C. Tang
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