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8. CONVERTIBLE DEBT (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Interest expense $ 50,000 $ 55,878 $ 100,000 $ 115,878
Expected dividend yield 0.00%   0.00%  
Remaining term (years)       3 years
Amortization expense $ 0 $ 7,904 $ 17,534 $ 15,941
Minimum        
Expected volatility 104.06%   104.06%  
Risk-free rate 1.49%   1.49%  
Maximum        
Expected volatility 111.54%   111.54%  
Risk-free rate 1.59%   1.59%