PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid clinical trial expenses	$ 140,964	$ 202,743
Prepaid insurance	360,608	617,096
Other prepaid and current assets	144,788	136,060
Total prepaid expenses and other current assets	$ 646,360	$ 955,899