1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chang Gung Memorial Hospital, Yunlin 63862, Taiwan, R.O.C.
2. Department of Gastroenterology and Hepatology, Liver Research Center, Chang Gung Memorial Hospital, Linkou 33305, Taiwan, R.O.C.
3. Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou 33305, Taiwan, R.O.C.
4. Division of Thoracic Medicine, Department of Internal Medicine and Department of Medicine, Chang Gung Memorial Hospital, Yunlin 63862, Taiwan, R.O.C.