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Fair Value Measurements - Fair Value of Liabilities Measured on a Recurring Basis (Details) - Recurring - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Fair value of liabilities measured on a recurring basis    
Warrant liability $ 220,376 $ 103,860
Derivative liability   11,000
Conversion option liability   111,841
Total fair value 220,376 226,701
Level 3    
Fair value of liabilities measured on a recurring basis    
Warrant liability 220,376 103,860
Derivative liability   11,000
Conversion option liability   111,841
Total fair value $ 220,376 $ 226,701