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Summary of Significant Accounting Policies (Details 1) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Warrant liability        
Balance as of beginning of period $ 1,381,465 $ 345,960 $ 345,960  
Balance as of end of period 1,977,363   1,381,465 $ 345,960
Warrant [Member]        
Warrant liability        
Balance as of beginning of period 1,381,465 345,960 345,960
Issuance of warrants in connection with convertible promissory notes     777,490 345,640
Value assigned to warrants in connection with convertible promissory and short-term notes 579,873 440,919    
Change in fair value of warrant liability 16,025 (19,253) 258,015 320
Balance as of end of period $ 1,977,363 $ 767,626 $ 1,381,465 $ 345,960