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

6 Months Ended

Jun. 30, 2021

Notes Tables

Other Current Liabilities [Table Text Block]

	June 30, 2021		December 31, 2020
Accrued payroll and payroll related expenses		542,598		653,899
Accrued professional fees		61,306		31,809
Accrued clinical studies expenses		634,870		1,055,398
Other accrued expenses		16,016		35,364
Total	$	1,254,790	$	1,776,470