PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid clinical trial expenses	$ 92,742	$ 202,743
Prepaid insurance	127,654	617,096
Other prepaid and current assets	119,487	136,060
Total prepaid expenses and other current assets	$ 339,883	$ 955,899