1. Department of General Surgery, First Affiliated Hospital of China Medical University, Shenyang Liaoning, P.R. China
2. Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Liver Disease Research Institute of Shanghai Institute of Traditional Chinese Medicine, Key Laboratory of Liver and Kidney Diseases of the Ministry of Education, Shanghai, China
3. Department of General Surgery, Liaoning Health Industry Group, Benxi Iron & Steel Industry Group, General Hospital, Benxi Liaoning P.R. China