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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Stockholders' equity (deficit):    
Common stock par value $ 0.001 $ 0.001
Common stock shares authorized 150,000,000 150,000,000
Common stock shares issued 17,345,609 8,803,942
Common stock shares outstanding 17,345,609 8,803,942
Common stock subscribed but unissued 0 3,225,000