Note 4 - Prepaid Expenses (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	March 31,		December 31,
	2019		2018
Prepaid insurance	$	234,875	$	160,576
Prepaid research and development		392,894		218,090
Professional services		96,250		110,094
Financial exchange fees		58,685
Prepaid rent		17,100
Retainer and security deposits		14,218		16,718
Other		21,446		4,355
Total prepaid expenses	$	835,468	$	509,833