8.Rod S. Taylor, Allan Brown, Shah Ebrahim, Judith Jolliffe, Hussein Noorani, Karen Rees, Becky Skidmore, James A. Stone, David R. Thompson, Neil Oldridge. Exercise-Based Rehabilitation for Patients with Coronary Heart Disease: Systematic Review and Meta-analysis of Randomized Controlled Trials. Am J Med. 2004;116:682– 692. http://exerciseprescription.wiki.umt.edu/file/view/Taylor+et+al,+2004.pdf
9.Gammon MD, Schoenberg JB, Ahsan H, et al. Tobacco, alcohol, and socioeconomic status and adenocarcinomas of the esophagus and gastric cardia. J Natl Cancer Inst. 1997;45:273–6. http://www.ncbi.nlm.nih.gov/pubmed/9293918
10.U.S. Preventive Services Task Force. Counseling to Prevent Tobacco Use and Tobacco-Related Diseases: Recommendation Statement. November 2003. http://www.uspreventiveservicestaskforce.org/3rduspstf/tobacccoun/tobcounrs.htm