Departments of Internal Medicine, Division of Gastroenterology and Pharmacology, Kosin University, College of Medicine, Busan, Republic of Korea
2.Department of Internal Medicine, Kosin University College of Medicine, Busan, Republic of Korea
3.Department of Internal Medicine, Kosin University Faculty of Medicine, Busan, Republic of Korea
4.Departments of Internal Medicine, Division of Gastroenterology, Kosin University, College of Medicine, Busan, Republic of Korea