PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid clinical trial expenses	$ 173,645	$ 0
Prepaid insurance	117,306	684,268
Other prepaid and current assets	141,551	137,782
Total prepaid expenses and other current assets	$ 432,502	$ 822,050