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Stockholders' Equity (Details 1) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Total $ 681,705 $ 974,696 $ 1,363,410 $ 1,949,395
Research and development [Member]        
Total 138,609 426,308 277,218 852,616
General and administrative [Member]        
Total $ 543,096 $ 548,388 $ 1,086,192 $ 1,096,779