Note 4 - Other Accrued Expenses and Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Other Current Liabilities [Table Text Block]

	March 31, 2020		December 31, 2019
Accrued payroll and payroll related expenses	$	149,620	$	182,708
Accrued professional fees		338,627		48,338
Accrued clinical studies expenses		9,100		57,378
Other accrued expenses		22,205		70,108
Total	$	519,552	$	358,532