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Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Payables and Accruals [Abstract]    
Clinical expenses $ 2,105 $ 1,470
Compensation, excluding taxes 1,535 1,040
Professional fees 61 1,087
Interest on convertible note 673 553
Other 856 535
Total accrued expenses $ 5,230 $ 4,685