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

3 Months Ended

Mar. 31, 2019

Notes Tables

Other Current Liabilities [Table Text Block]

	March 31, 2019		December 31, 2018
Accrued payroll and payroll related expenses		258,877		409,889
Accrued professional fees		96,124		69,231
Accrued clinical studies expenses		170,755		34,000
Other accrued expenses		77,692		92,106
Total	$	603,448	$	605,226