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Note 5 - Accrued Expenses
12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]

5. Accrued Expenses

 

Accrued expenses consist of the following as of December 31, 2021, and 2020 (in thousands):

 

  

2021

  

2020

 

Accrued compensation and related expenses

 $480  $443 

Accrued professional fees

  163   174 

Accrued clinical trial expenses

  618   497 

Other

  113   237 
  $1,374  $1,351