Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable And Accrued Expenses (Details)

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Accounts Payable And Accrued Expenses (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Accounts Payable And Accrued Expenses [Abstract]    
Trade payables $ 945,829 $ 547,519
Accrued expenses 89,000 140,637
Accrued research and development contract costs 623,266 1,782,131
Payroll liabilities 262,639 682,263
Total accounts payable and accrued expenses $ 1,920,734 $ 3,152,550