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Note 5 - Prepaid Expenses - Schedule of Prepaid Expenses (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Prepaid research and development	$ 948,250	$ 507,733
Prepaid insurance	251,455	222,476
Professional services	203,919	108,850
Financial exchange fees	21,500
Retainer and security deposits	14,218	14,218
Prepaid rent	13,464	4,275
Other	11,560	4,792
Total prepaid expenses	$ 1,464,366	$ 862,344

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