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Accrued Liabilities
3 Months Ended
Mar. 31, 2023
Accrued Liabilities [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities as of March 31, 2023 and December 31, 2022 were as follows (in thousands):
March 31, 2023December 31, 2022
Salaries, employee benefits and related taxes$1,173 $2,586 
Operating lease liabilities — current156 180 
D&O insurance liabilities956 — 
Clinical and R&D related liabilities1,334 785 
Other326 177 
Total$3,945 $3,728