1. National Center for Chronic Disease Prevention and Health Promotion (US) Office on Smoking and Health: The health consequences of smoking—50 years of progress: a report of the surgeon general. Atlanta (GA) 2014.
2. International Agency for Research on Cancer: IARC monographs on the evaluation of carcinogenic risks to humans. Alcohol drinking. Lyon: IARC 1988.
3. World Cancer Research Fund International: Summary of global evidence on diet, weight, physical activity & what increases or decreases your risk of cancer. London: World Cancer Research Fund International 2017.
4. Robert Koch Institute: German Centre for Cancer Registry Data: Database Query 2017. www.krebsdaten.de/Krebs/DE/Datenbankabfrage/datenbankabfrage_stufe1_node.html (last accessed on 12 December 2017).
5. Statistisches Bundesamt: Bevölkerung Deutschlands bis 2060 – Ergebnisse der 13. koordinierten Bevölkerungsvorausberechnung. Wiesbaden, Germany. (last accessed on14 December 2017).