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Consolidated Statements of Operations and Comprehensive Loss - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Operating expenses    
General and administrative $ 1,277,180 $ 1,303,189
Research and development expenses 1,693,391 1,086,653
License expenses 112,500 100,000
Impairment of goodwill 0 5,187,519
Total operating expenses 3,083,071 7,677,361
Loss from operations (3,083,071) (7,677,361)
Other income 31,231 11,744
Net loss (3,051,840) (7,665,617)
Foreign currency translation adjustments 7,621 (13,746)
Comprehensive loss $ (3,044,219) $ (7,679,363)
Loss per common share - basic and diluted (in usd per share) $ (0.27) $ (0.88)
Weighted average number of common shares outstanding:    
Basic and diluted (in shares) 11,422,161 8,684,550