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Consolidated Statements of Operations and Comprehensive Loss - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues      
Product revenues $ 127,663 $ 186,738 $ 84,518
Costs and expenses      
Production costs 6,680,012 3,573,858 2,626,353
Sales and marketing 533,428 709,023 297,687
Research and development 2,364,610 2,359,441 3,458,564
General and administrative 6,797,443 6,723,060 4,067,710
Total costs and expenses 16,375,493 13,365,382 10,450,314
Operating loss (16,247,830) (13,178,644) (10,365,796)
Other income (expense)      
Interest expense (152,367) (62,988) (22,257)
Other income (expense), net 212 13,990 5,994
Total other income (expense) (152,155) (48,998) (16,263)
Net loss (16,399,985) (13,227,642) (10,382,059)
Other comprehensive income (loss):      
Foreign currency translation gain (loss) 92,902 214,026 (360,302)
Total other comprehensive income (loss) 92,902 214,026 (360,302)
Comprehensive loss (16,307,083) (13,013,616) (10,742,361)
Earnings per share      
Net loss (16,399,985) (13,227,642) (10,382,059)
Deemed dividend     (1,822,873)
Net loss attributable to common shareholders $ (16,399,985) $ (13,227,642) $ (12,204,932)
Basic and diluted net loss per share attributable to common shareholders $ (0.45) $ (0.66) $ (0.94)
Weighted average number of common shares - basic and diluted 36,347,398 20,078,017 13,028,760