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Accrued Expenses (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Accrued Expenses    
Payroll and related benefits $ 16,493 $ 131,530
Accrued interest expense   36,041
Accrued professional and clinical fees 216,198 103,300
Accrued license payments 3,833 506,000
Total accrued expenses $ 236,524 $ 776,871