1. Department of Pathology, Chang Gung Memorial Hospital, Keelung and Chang Gung University, Keelung, Taiwan
2. Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital, Keelung and Chang Gung University, Keelung, Taiwan
3. Division of Pulmonary, Critical Care and Sleep Medicine, Chang Gung Memorial Hospital, Keelung and Chang Gung University, Keelung, Taiwan