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Prepaid Expenses and Other Current Assets (Tables)
6 Months Ended
Jun. 30, 2020
Prepaid Expense and Other Assets, Current [Abstract]  
Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

 

    At June 30, 2020     At December 31, 2019  
Prepaid insurance   $ 569     $ 202  
Prepaid clinical trials     633       322  
Prepaid other     209       221  
Deferred operating costs     37       32  
Total prepaid and other current assets   $ 1,448     $ 777