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Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Payables and Accruals [Abstract]    
Clinical study patient costs incurred but not yet invoiced $ 439 $ 1,393
Accrued vacation, wages, bonuses, and related payroll taxes 392 329
Accrued other 60 2
Total $ 891 $ 1,724