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Accrued Liabilities and Other Payables (Tables)
6 Months Ended
Jun. 30, 2020
Payables and Accruals [Abstract]  
Schedule of accrued liabilities and other payables

   June 30,
2020
   December 31,
2019
 
Accrued professional fees  $969,877   $1,243,190 
Accrued research and development fees   507,646    650,000 
Accrued payroll liability   373,551    373,083 
Accrued directors' compensation   107,500    115,000 
Accounts payable   80,589    84,316 
Accrued utilities   32,210    12,260 
Accrued liability insurance premium   19,338    - 
Other   110,457    92,335 
   $2,201,168   $2,570,184