1 Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
2 Department of Gastroenterology, The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China.
3 Department of Gastroenterology, The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China. Electronic address: drzhouying@126.com.
4 Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Electronic address: dr_rjzhangjianjun@126.com.