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Note 6 - Accrued Expenses and Other Current Liabilities (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Other Current Liabilities [Table Text Block]
   

June 30, 2023

   

December 31, 2022

 

Accrued payroll and payroll related expenses

  $ 265,382     $ 131,777  

Accrued professional fees

    208,900       552,785  

Accrued clinical studies expenses

          475,141  

Other

    58,268       129,851  

Total

  $ 532,550     $ 1,289,554