1. Division of Gastroenterology, Department of Internal Medicine, Haeundae Paik Hospital, Busan, Republic of Korea
2. College of Medicine, Inje University, Gimhae, Republic of Korea
3. Department of Gastroenterology, Dongnam Institute of Radiological and Medical Sciences, Busan, Republic of Korea
4. College of Design, Inje University, Gimhae, Republic of Korea
5. Department of Computer Engineering, Inje University, Gimhae, Republic of Korea