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Accrued Expenses (Tables)
 6 Months Ended
Jun. 30, 2019
Payables and Accruals [Abstract]  
Schedule of accrued expenses

   June 30,
2019		   December 31,
2018		 
         
Clinical trial expenses  $

2,655,845

   $1,633,713 
Other   

135,666

    156,976 
Total  $2,791,511   $1,790,689