LAUSR

cohort studies Seogsong Jeong, Won Kim, Sang Min Park Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea. Department of Biomedical Informatics, CHA University School of Medicine, CHA University, Seongnam, Korea. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea. Department of Family Medicine, Seoul National University Hospital, Seoul, Korea. *Corresponding authors: Sang Min Park, Department of Family Medicine and Biomedical Sciences, College of Medicine, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, Korea. Tel: +82-22072-3331; Fax: +82-2-766-3276. E-mail: [email protected]. Won Kim, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul 07061, Korea. Tel: +82-2-870-2233; Fax: +82-2-831-2826. E-mail: [email protected].