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2. U.S. Department of Health and Human Services. The Health Consequences of Involuntary Exposure to Tobacco Smoke: A Report of the Surgeon General. Atlanta, GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Coordinating Center for Health Promotion, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health; 2006. www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CC0QFjAC&url=http%3A%2F%2Fwww.surgeongeneral.gov%2Flibrary%2Freports%2Fsecondhandsmoke%2Ffullreport.pdf&ei=n7TAVP7MIMHkUpntgYgJ&usg=AFQjCNHbOwTj9jriHLwAnqSOOCPtq8Z1Lg&bvm=bv.83829542,d.d24. Accessed January 21, 2015.
3. World Health Organisation. Cancer prevention. www.who.int/cancer/prevention/en/. Accessed January 21, 2015.
4. Global Effects of Smoking, of Quitting, and of Taxing Tobacco
5. European Commission, Consumers D-GHa. Attitudes of Europeans Towards Tobacco. European Commission, Directorate-General Health and Consumers; 2012. http://ec.europa.eu/health/ph_information/documents/ebs_239_en.pdf. Accessed January 21, 2015.