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Geissler, Kimberley H and Kaizer, Kia and Johnson, Julie K and Doonan, Samantha M and Whitehill, Jennifer M (2020) Evaluation of availability of survey data about cannabis use. JAMA Network Open, 3, (6 e206039), e206039. doi: 10.1001/jamanetworkopen.2020.6039..
Johnson, Julie K and Doonan, Samantha M (2021) Cannabis policy heterogeneity and effects on research—complexity expected. JAMA Network Open, 4, (3), e212545. doi: 10.1001/jamanetworkopen.2021.2545.