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v3.20.1

Share capital - Schedule of fair value assumptions of warrants (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of warrants [Line Items] |  |
Weighted average share price of warrants | $ 32.16 |
Expected dividend yield of warrants granted | 0.00% | 0.00%
Expected life of warrants |  | 2 years
Expected volatility of warrants granted | 100.00% | 100.00%
Bottom of range |  |
Disclosure of warrants [Line Items] |  |
Weighted average share price of warrants |  | $ 4.42
Exercise price of warrants granted | $ 2.61 | $ 4.42
Risk free interest rate of warrants granted | 1.41% | 1.70%
Expected life of warrants | 1 year 4 months 20 days |
Top of range |  |
Disclosure of warrants [Line Items] |  |
Weighted average share price of warrants |  | $ 18.09
Exercise price of warrants granted | $ 26.73 | $ 26.13
Risk free interest rate of warrants granted | 1.52% | 2.17%
Expected life of warrants | 6 years 6 months 18 days |

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