Proctor, Robert N (2012-02-16). “The history of the discovery of the cigarette–lung cancer link: evidentiary traditions, corporate denial, global toll: Table 1”. Tobacco Control21 (2): 87–91. doi:10.1136/tobaccocontrol-2011-050338. ISSN0964-4563. PMID22345227.
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Proctor, Robert N (2012-02-16). “The history of the discovery of the cigarette–lung cancer link: evidentiary traditions, corporate denial, global toll: Table 1”. Tobacco Control21 (2): 87–91. doi:10.1136/tobaccocontrol-2011-050338. ISSN0964-4563. PMID22345227.
Proctor, Robert N (2012-02-16). “The history of the discovery of the cigarette–lung cancer link: evidentiary traditions, corporate denial, global toll: Table 1”. Tobacco Control21 (2): 87–91. doi:10.1136/tobaccocontrol-2011-050338. ISSN0964-4563. PMID22345227.
