PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid clinical trial expenses	$ 206,070	$ 0
Prepaid insurance	402,252	684,268
Other prepaid and current assets	206,494	137,782
Total prepaid expenses and other current assets	$ 814,816	$ 822,050