Department of Internal Medicine;
Medical Research Institute;
Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology;
Pusan National University Yangsan Hospital;
Department of Internal Medicine;
Dong-eui Medical Center;
Department of Internal Medicine;
Bongseng Memorial Hospital;
Colonoscopy; Cap-assisted; colonoscopy; Colonic; polyps; Adenoma; Colorectal; neoplasm;