Note 4 - Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Other Current Liabilities [Table Text Block]

	December 31,
	2021		2020
Accrued payroll and payroll related expenses	$	879,971	$	653,899
Accrued professional fees		247,704		31,809
Accrued clinical studies expenses		786,579		1,055,398
Other		65,935		35,364
Total	$	1,980,189	$	1,776,470