1 Department of Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China.
2 Department of General Surgery, Beijing Friendship Hospital, Beijing, 100050, China.
3 Department of Bariatric and Metabolic Surgery, Shanghai East Hospital, Tongji University, 1800 Yuntai Road, Shanghai, 200124, China.
4 Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
5 Whittington Hospital, London, UK.
6 Department of Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China. twcc@jnu.edu.cn.
7 Department of Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613 Huangpu Avenue West, Guangzhou, 510630, China. twcc@jnu.edu.cn.