Quarterly report pursuant to Section 13 or 15(d)

4. ACCRUED EXPENSES

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4. ACCRUED EXPENSES
 3 Months Ended
Mar. 31, 2018
Payables and Accruals [Abstract]  
ACCRUED EXPENSES

Accrued expenses as of March 31, 2018 and December 31, 2017 were as follows:

  

    March 31, 2018     December 31, 2017  
             
Accrued payroll expenses   $ 466,251     $ 1,037,122  
Other accrued liabilities     534,627       894,798  
    $ 1,000,878     $ 1,931,920