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2. Departments and Agencies of Public Service and Military Canada [homepage on the internet].Health Canada is advising Canadians about safe levels of caffeine consumption(2017) [updated May 2017
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4. European Food Safety Authority [homepage on the internet].Caffeine[updated 2015; cited 1 February 2020]. Available fromhttp://www.efsa.europa.eu/sites/default/files/corporate_publications/files/efsaexplainscaffeine150527.pdf.
5. The clinical toxicology of caffeine: A review and case study