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7. Accounts Payable and Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2013
Payables and Accruals [Abstract]  
Accounts payable and accrued expenses
   2013   2012 
Accounts payable  $5,564,140   $5,558,663 
Accrued professional and related fees   91,528    63,190 
Total  $5,655,668   $5,621,853