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Accounts Payable and Accrued Expenses
3 Months Ended
Mar. 31, 2015
Accounts Payable and Accrued Expenses [Abstract]  
Accounts Payable and Accrued Expenses
7.  Accounts Payable and Accrued Expenses

The carrying value of our accounts payable and accrued expenses approximates fair value, as it represents amounts due to vendors and employees which will be satisfied within one year. Accounts payable and accrued expenses at the below dates consisted of the following:

  
March 31, 2015
  
December 31, 2014
Accrued consulting and clinical trial costs
 
$
1,992
  
$
2,662
Accrued payroll and related costs
  
666
   
1,722
Legal and professional fees
  
1,333
   
1,063
Accounts payable and other
  
1,310
   
1,123
Total
 
$
5,301
  
$
6,570