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Accrued Expenses and Other Current Liabilities
 9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Accrued Expenses and Other Current Liabilities
6. Accrued Expenses and Other Current Liabilities

 

Accrued expenses and other current liabilities consisted of the following at September 30, 2018 and December 31, 2017:

 

   September 30,   December 31, 
   2018   2017 
   (unaudited)     
Compensation, benefits and payroll taxes  $388,500   $310,775 
Other accrued expenses   382,645    94,871 
Total accrued expenses and other current liabilities  $771,145   $405,646 
7. Accrued Expenses and Other Current Liabilities

 

Accrued expenses and other current liabilities consist of the following:

 

   December 31, 
   2017   2016 
Compensation, benefits and payroll taxes  $310,775   $311,845 
Other accrued expenses   94,871    160,561 
Total accrued expenses and other current liabilities  $405,646   $472,406