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Prepaid Expenses and Other Current Assets (Tables)
3 Months Ended
Mar. 31, 2016
Prepaid Expenses and Other Current Assets [Abstract]  
Summary of prepaid expenses and other current assets
 March 31,  December 31, 
  2016  2015 
       
Prepaid insurance $292,494  $376,906 
Prepaid clinical trial expenses  549,798   283,430 
Other prepaid expenses  94,777   143,127 
Total prepaid expenses and other current assets $937,069  $803,463