Note 5 - Prepaid Expenses (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	As of March 31,		As of December 31,
	2020		2019
Prepaid research and development	$	712,387	$	507,733
Prepaid insurance		280,098		222,476
Professional services		278,298		108,850
Financial exchange fees		32,250		-
Retainer and security deposits		14,218		14,218
Prepaid rent		17,952		4,275
Other		1,917		4,792
Total prepaid expenses	$	1,337,120	$	862,344