Affiliation: | 1. Department of Surgery, Yuan's General Hospital, 162, Cheng-Kung First Road, Kaohsiung, Taiwan 2. Department of Medicine, Yuan's General Hospital, 162, Cheng-Kung First Road, Kaohsiung, Taiwan 3. Department of Pathology, Yuan's General Hospital, 162, Cheng-Kung First Road, Kaohsiung, Taiwan 4. Department of Surgery, Gastroenterology Institute, Tokyo Women's Medical College, 8-1 Kawada-cho, Shinguku-ku, 62, Tokyo, Japan
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