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Prepaid Expenses and Other Current Assets (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Prepaid Expenses and Other Current Assets [Abstract]    
Prepaid insurance $ 76,211 $ 332,809
Prepaid clinical trial expenses 406,833 1,093,441
Other prepaid expenses 189,908 410,201
Total prepaid expenses and other current assets $ 672,952 $ 1,836,451