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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Of Commitments And Contingent Liabilities [abstract] |
Disclosure of quantities available to supply by fiscal period |
Year | Commitment
2020 | 350 kilograms
2021 | 650 kilograms
2022 | 1,000 kilograms
2023 | 1,000 kilograms
2024 | 1,000 kilograms

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- Definition Represents the tabular disclosure of quantities available to supply by fiscal period, under the supply commitment. + References No definition available. + Details
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