Note 6 - Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2023

Dec. 31, 2022

Notes Tables

Other Current Liabilities [Table Text Block]

	March 31, 2023		December 31, 2022
Accrued payroll and payroll related expenses	$	302,085	$	131,777
Accrued professional fees		734,371		552,785
Accrued clinical studies expenses		16,745		475,141
Other		101,274		129,851
Total	$	1,154,475	$	1,289,554

	December 31,
	2022		2021
Accrued payroll and payroll related expenses	$	131,777	$	879,971
Accrued professional fees		552,785		247,704
Accrued clinical studies expenses		475,141		786,579
Other		129,851		65,935
Total	$	1,289,554	$	1,980,189