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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Loss for the period $ (1,920,510) $ (3,810,277)
Adjustments to reconcile (loss) for the period to net cash used in operating activities:    
Depreciation 26,252 58,789
Stock-based compensation 330,170 1,134,531
Change in the fair value of warrants with down-round protection (160,028)
Linkage difference on principal of loans from stockholders 3,865 (1,963)
Changes in assets and liabilities:    
(Increase) decrease in accounts receivable 1,184 (4,175)
Decrease in inventory 49,228 22,113
(Increase) decrease in other current assets (52,194) (24,113)
Operating lease right-of-use assets 51,787
(Decrease) increase in accounts payable (481,558) (7,404)
Increase in other current liabilities 2,520 350,318
Operating lease liabilities (51,787)
Net cash used in operating activities (2,041,043) (2,442,209)
Cash flows from investing activities:    
Purchase of property and equipment (9,913) (1,912)
Net cash used in investing activities (9,913) (1,912)
Cash flows from financing activities    
Proceeds allocated to Common Stock from Series D offering, net of cash issuance expenses 4,165,079 1,318,350
Proceeds allocated to Series D Warrants, net of cash issuance expenses 33,495 1,100,140
Net cash provided by (used in) financing activities 4,198,574 2,418,490
Effect of exchange rate changes on cash and cash equivalents 34,281 (12,789)
Increase (decrease) in Cash, Cash equivalents, and restricted cash 2,181,899 (38,420)
Cash, Cash equivalents, and restricted cash at beginning of the period 149,684 93,344
Cash, cash equivalents, and restricted cash at end of the period $ 2,331,583 $ 54,924