Affiliation: | Jun Chen,Jian-Hua Han,Chun Liu,Ren-He Yu,Fa-Zhao Li,Qun-Fang Li , Guo-Zhong Gong Liver Diseases Center,Second Xiangya Hospital,Central South University,Changsha 410011,China,Department of Epidemics , Health Statistics,School of Public Health,Changsha 410078 |