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Accrued expenses and other current liabilities
 6 Months Ended
Jun. 30, 2013
Accrued expenses and other current liabilities

2. Accrued expenses and other current liabilities

Accrued expenses and other current liabilities are comprised of the following (in thousands):

 

     June 30,
2013		      December 31,
2012		  

Salary and related expenses

    $ 8,146       $ 10,074   

Research and clinical trial costs

      6,558         5,995   

Accrued interest

      7,911         4,533   

Construction in progress

      2,661         3,878   

Other

      1,708         1,297   
  

 

 

     

 

 

  

Accrued expenses and other current liabilities

    $ 26,984       $ 25,777