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5. Prepaid Expenses (Tables)
6 Months Ended
Jun. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepaid expenses
   June 30,   December 31, 
   2017   2016 
Prepaid insurance costs  $9,297   $43,324 
Prepaid employee benefits   13,113    11,844 
Prepaid office and other costs   23,781    31,724 
Total prepaid expenses  $46,191   $86,892