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Two Thousand Eighteen P I P E Warrant Liability [Member] 2018 PIPE Warrant Liability [Member] 2018 PIPE Warrants [Member] Employee Related Liabilities Current Accrued compensation Employee-related Liabilities, Current, Total Proceeds from offering after deducting underwriting discount and other estimated offering expenses. Proceeds From Offering After Deducting Underwriting Discount And Other Estimated Offering Expenses Proceeds from offering after deducting underwriting discount and other estimated offering expenses Increase decrease in accrued clinical trial site costs. 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