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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Accounts Payable and Accrued Expenses    
Accounts payable $ 2,409 $ 2,010
Accrued payroll 651 260
Accrued bonus 916 141
Accrued offering costs 154 655
Accrued research and development costs 518 490
Accrued consulting fees 35 451
Accrued legal costs 107 308
Other accrued expenses 203 113
Total accounts payable and accrued expenses $ 4,993 $ 4,428