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Trade and other payables
 12 Months Ended
Dec. 31, 2021
Trade and other payables [abstract]  
Trade and other payables

12. Trade and other payables

Trade and other payables consist of the following:

    December 31, 2021     December 31, 2020  
    $     $  
Trade payables   2,995,726     2,063,162  
Accrued liabilities (i)   4,455,346     1,622,227  
Other payables   59,699     14,714  
    7,510,771     3,700,103  

(i) Accrued liabilities consist of the following:

    December 31, 2021     December 31, 2020  
    $     $  
External research and development fees   3,062,844     248,898  
Operational expenses   412,008     229,758  
Professional fees   570,193     435,244  
Accrued interest   364,275     349,566  
Severance   46,026     166,662  
Bonus   -     192,099  
    4,455,346     1,622,227