1Division of Gastroenterology, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea 2Division of Gastroenterology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea
Corresponding Author:
Joung-Ho Han ,Tel: +82-43-269-6802, Fax: +82-43-273-3252, Email: joungho@cbnu.ac.kr
Received: October 28, 2019; Accepted: November 8, 2019.