1. Doll R, Hill AB. Lung Cancer and Other Causes of Death in Relation to Smoking. Br Med J. 1956 Nov 10;2(5001):1071–81.
2. Hill G, Millar W, Connelly J. “The great debate” 1: Smoking, lung cancer, and cancer epidemiology. Can Bull Med Hist Bull Can Hist Médecine. 2003;20(2):367–86.
3. Fisher RA. Dangers of Cigarette-smoking. Br Med J. 1957 Jul 6;2(5035):43.
4. Fisher RA. Cancer and Smoking. Nature. 1958 Aug 30;182(4635):596–596.
5. Hill AB. The Environment and Disease: Association or Causation? Proc R Soc Med. 1965 May;58(5):295–300.
6. Nordt C, Warnke I, Seifritz E, Kawohl W. Modelling suicide and unemployment: a longitudinal analysis covering 63 countries, 2000–11. Lancet Psychiatry. 2015 Mar;2(3):239–45.
7. Ding M, Bhupathiraju SN, Chen M, Dam RM van, Hu FB. Caffeinated and Decaffeinated Coffee Consumption and Risk of Type 2 Diabetes: A Systematic Review and a Dose-Response Meta-analysis. Diabetes Care. 2014 Feb 1;37(2):569–86.
8. Greenwood M, Wood F. The Relation between the Cancer and Diabetes Death-rates. Epidemiol Infect. 1914 Apr;14(01):83–118.
9. Badrick E, Renehan AG. Diabetes and cancer: 5 years into the recent controversy. Eur J Cancer. 2014 Aug;50(12):2119–25.
10. Bagnardi V, Rota M, Botteri E, Tramacere I, Islami F, Fedirko V, et al. Alcohol consumption and site-specific cancer risk: a comprehensive dose–response meta-analysis. Br J Cancer. 2015 Feb 3;112(3):580–93.
11. Fedirko V, Tramacere I, Bagnardi V, Rota M, Scotti L, Islami F, et al. Alcohol drinking and colorectal cancer risk: an overall and dose-response meta-analysis of published studies. Ann Oncol. 2011 Sep 1;22(9):1958–72.
12. Lynch NA. Helicobacter pylori and ulcers: A paradigm revised. Federation of American Societies for Experimental Biology; 1998 [cited 2015 Mar 4]. Available from: http://www.faseb.org/portals/2/PDFs/opa/pylori.pdf
13. Helikobakteeri-infektio :: Terveyskirjasto [Internet]. [cited 2015 Mar 4]. Available from: http://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_artikkeli=seh00085
14. Saano V, Javanainen M. Tehoaako homeopatia ja onko se lääketiedettä? Suom Lääkärilehti. 1996;51(3):197.
15. Hoek HW, Brown AS, Susser E. The Dutch famine and schizophrenia spectrum disorders. Soc Psychiatry Psychiatr Epidemiol. 1998 Aug;33(8):373–9.
16. Xu M-Q, Sun W-S, Liu B-X, Feng G-Y, Yu L, Yang L, et al. Prenatal Malnutrition and Adult Schizophrenia: Further Evidence From the 1959-1961 Chinese Famine. Schizophr Bull. 2009 May;35(3):568–76.
17. Viruses that can lead to cancer | American Cancer Society [Internet]. [cited 2015 Mar 4]. Available from: http://www.cancer.org/cancer/cancercauses/othercarcinogens/infectiousagents/infectiousagentsandcancer/infectious-agents-and-cancer-viruses
18. Hernán MA, Taubman SL. Does obesity shorten life? The importance of well-defined interventions to answer causal questions. Int J Obes. 2008;32(S3):S8–14.