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Accrued Expenses (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Payables and Accruals [Abstract]    
Clinical expenses $ 1,064 $ 1,129
Compensation, excluding taxes 1,567 1,859
Professional fees 252 272
Interest on convertible note 753 713
Inventory 12 585
Other 747 691
Total accrued expenses $ 4,395 $ 5,249