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Summary of Significant Accounting Policies (Details 1) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dilutive adjustments to the number of common shares    
Total 7,451,439 7,389,238
Common stock purchase warrants [Member]    
Dilutive adjustments to the number of common shares    
Total 5,886,817 6,303,643
Stock options [Member]    
Dilutive adjustments to the number of common shares    
Total 1,564,622 1,085,595