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Stockholders' Equity (Details 2)
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Risk free interest rate 1.92% 2.63%
Expected volatility 140.00% 150.00%
Warrant [Member]    
Risk free interest rate 2.49% 2.65%
Expected life of the options 5 years 5 years
Expected volatility 200.00% 210.00%
Expected dividend yield 0.00% 0.00%