Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Parentheticals)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Parentheticals) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Series F Preferred Stock    
Share issuance costs $ 118,855  
Series D Preferred Stock    
Share issuance costs $ 183,343  
Conversion liability into common stock per share $ 0.25  
Series B Preferred Stock    
Conversion of preferred stock price per share 0.25 $ 0.80
Conversion liability into common stock per share 0.15 $ 0.40
Series C Preferred Stock    
Share issuance costs   $ 92,331
Conversion of preferred stock price per share   $ 0.40
Conversion liability into common stock per share $ 0.25 $ 0.25