1Wang Z, Xia B, Ma C, et al. Prevalence and risk factors of fatty liver disease in the Shuiguohu district of Wuhan city, central China [J]. Postgrad Med J, 2007,83 (977) : 192- 195.
2MeCullough A J. The clinical features, diagnosis and natural history of nonalcoholic fatty liver disease [J]. Clin Liver Dis, 2004,8 ( 1 ) : 521-533.
3Leon A. The natural history of nonalcoholic fatty liver disease : a population-based cohort study [J]. Gastroenterology, 2005,129 ( 1 ) : 113 - 121.
4Rafiq N, Bai C, Fang Y,et al. Long- term follow-up of patients with nonalcoholic fatty liver [J]. Clin Gastroenterol Hepatol, 2009,7 (2) : 234-238.
5Ekstedt M, Franzeen L E, Mathiesen UL, et al. Long-term follow-up of patients with NAFLD and elevated liver enzymes [J]. Hepatology, 2006,44 (2) : 865-873.
6Bedogni G, Miglioli L, Masutti F, et al. Prevalence of and risk factors for nonalcoholic fatty liver disease: the dionysos nutrition and liver study. [J]. Hepatology, 2005,42( 1 ) :44-52.
8Browning J D. Prevalence of hepatic steatosis in an urban population in the United States: impact of ethnicity [J]. Hepatology, 2004,40(6) : 1387-1395.