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Accrued liabilities (Details) - USD ($) | Mar. 31, 2022 | Sep. 30, 2021
--- | --- | ---
Payables and Accruals [Abstract] |  |
Clinical site costs and patient visits | $ 1,797,377 | $ 2,035,800
Accrued compensation and benefits | 511,234 | 1,201,903
Fixed contract accruals | 391,818 | 649,649
Accrued license fees payables | 500,000 |
All other accrued liabilities | 1,794,959 | 1,727,422
Total accrued liabilities | $ 4,995,388 | $ 5,614,774

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