Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Accrued Liabilities

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Note 9 - Accrued Liabilities
3 Months Ended
Mar. 31, 2019
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
9.
Accrued Liabilities
 
Accrued liabilities consisted of the following (in thousands):
   
March 31, 2019
   
December 31, 2018
 
Accrued compensation
  $
365
    $
417
 
Accrued clinical study costs
   
255
     
292
 
Accrued research and other professional fees
   
33
     
65
 
Accrued taxes and other liabilities
   
33
     
34
 
Total accrued liabilities
  $
686
    $
808