1 Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
2 Department of Surgery, Min-Sheng General Hospital, Taoyuan, Taiwan, ROC.
3 Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
4 Faculty of Medicine and Institute of Emergency and Critical Medicine, National Yang Ming Chiao Tung University College of Medicine, Taipei, Taiwan, ROC.
5 Chinese Taipei Society for the Study of Obesity, Taipei, Taiwan, ROC.