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4. Prepaid Expenses (Tables)
3 Months Ended
Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepaid expenses
    March 31,     December 31,  
    2017     2016  
Prepaid insurance costs   $ 11,541     $ 43,324  
Prepaid employee benefits     11,729       11,844  
Prepaid office and other costs     37,977       31,724  
Total prepaid expenses   $ 61,247     $ 86,892