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Accrued Liabilities
 6 Months Ended
Jun. 30, 2023
Accrued Liabilities [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities as of June 30, 2023 and December 31, 2022 were as follows (in thousands):
June 30, 2023December 31, 2022
Salaries, employee benefits and related taxes$2,125 $2,586 
Clinical and R&D related liabilities924 785 
Accounting & tax consulting liabilities201 — 
Operating lease liabilities — current160 180 
Other171 177 
Total$3,581 $3,728