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v3.23.1

Accrued liabilities (Details) - USD ($) | Mar. 31, 2023 | Sep. 30, 2022
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Payables and Accruals [Abstract] |  |
Accrued clinical site and patient visits costs | $ 2,168,950 | $ 2,031,105
Accrued compensation and benefits | 1,572,500 | 1,297,337
Fixed contract accruals | 82,666 | 417,414
Milestone based contract accruals | 1,041,930 | 137,337
All other accrued liabilities | 1,956,792 | 2,061,760
Total accrued liabilities | $ 6,822,838 | $ 5,944,953

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