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Accrued Expenses and other accrued liabilities
12 Months Ended
Dec. 31, 2017
Payables and Accruals [Abstract]  
Accounts Expenses and other accrued liabilities
Accrued Expenses and other accrued liabilities
 
Accrued expenses and other liabilities consist of the following components (in thousands):
  
 
 
December 31,
 
 
2017
 
2016
Accrued payroll
 
$
250

 
$
84

Accrued clinical testing
 
320

 
238

Accrued license fees and SRA
 
260

 
157

Accrued legal and professional fees
 
50

 
66

Accrued board expenses
 

 
91

Accrued other
 
22

 
14

Total accrued expenses and other liabilities
 
$
902

 
$
650