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ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]      
Trade payables $ 663,254 $ 621,292 $ 401,272
Accrued interest 241,072 641,834 401,667
Accrued payroll and related obligations 1,062,246 386,165 260,153
Current portion of operating lease liabilities 145,259 242,650
Other 543,276 323,971 239,134
Total $ 2,655,107 $ 2,215,912 $ 1,302,226