Institution: | 1. Department of General Surgery, Sichuan Academy of Medical Sciences & Sichuan Provincial People''s Hospital, Chengdu, People''s Republic of China.; 2. Department of Health Management Centre, Sichuan Academy of Medical Sciences & Sichuan Provincial People''s Hospital, Chengdu, People''s Republic of China.; 3. Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, People''s Republic of China.; Taipei Medical University, Taiwan, |