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Prepaid Expenses and Other Current Assets (Details) - Schedule of prepaid expenses and other current assets - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Schedule of prepaid expenses and other current assets [Abstract] |  |
Prepaid insurance | $ 874 | $ 792
Prepaid clinical trial expenses | 543 | 457
Other prepaid expenses and other current assets | 61 | 68
Total prepaid expenses and other current assets | $ 1,478 | $ 1,317

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