1. Hossain, P., Kawar, B. & El Nahas, M. Obesity and diabetes in the developing world—a growing challenge. N. Engl. J. Med. 356, 213–215 (2007).
2. Lazo, M. & Clark, J. M. The epidemiology of nonalcoholic fatty liver disease: a global perspective. Semin. Liver Dis. 28, 339–350 (2008).
3. Centers for Disease Control and Prevention, National Center for Health Statistics, Obesity and Overweight [ online ], (2009).
4. World Health Organization, Obesity and Overweight, 2009 [ online ], (2009).
5. Brunt, E. M. & Tiniakos, D. G. in Surgical Pathology of the GI Tract, Liver, Biliary Tract and Pancreas (eds Odze, R. D. & Goldblum, J. R.) 1007–1014 (Elsevier, Philadelphia, 2009).