Hitomi Ichikawa, Mitsushige Sugimoto, Yukitoshi Sakao, Shu Sahara, Naro Ohashi, Ken Sugimoto, Hideo Yasuda, First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan
Mitsushige Sugimoto, Division of Digestive Endoscopy, Shiga University of Medical Science Hospital, Otsu, Shiga 520-2192, Japan
Yukitoshi Sakao, Tadashi Sakao, Hamana Clinic, Hamamatsu, Shizuoka 434-0037, Japan
Akihiko Kato, Blood Purification Unit, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan
Takahisa Furuta, Center for Clinical Research, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan
Akira Andoh, Department of Gastroenterology, Shiga University of Medical Science Hospital, Otsu, Shiga 520-2192, Japan
Author contributions: Ichikawa H, Sugimoto M, Sakao Y, Sahara S, Ohashi N and Yasuda H contributed to study conception and design; Ichikawa H, Sakao Y, Ohashi N and Sakao T contributed to data acquisition; Ichikawa H, Sugimoto M and Sakao Y contributed to data analysis and interpretation: Ichikawa H and Sugimoto M wrote the paper; Kato A, Sugimoto K, Furuta T and Andoh A contributed to editing.
Supported by the Japanese Association of Dialysis Physicians, No. 2014-2.
Institutional review board statement: The study was reviewed and approved by the Institutional Review Board of Hamamatsu University School of Medicine.
Informed consent statement: All study patients provided informed written consent prior to study enrollment.
Conflict-of-interest statement: None of the authors have any conflicts of interest related to this study.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Mitsushige Sugimoto, MD, PhD, Division of Digestive Endoscopy, Shiga University of Medical Science Hospital, Seta Tsukinowa-cho, Otsu, Shiga 520-2192, Japan. firstname.lastname@example.org
Telephone: +81-77-5482618 Fax: +81-77-5482618
Received: July 27, 2016
Peer-review started: August 1, 2016
First decision: August 22, 2016
Revised: October 18, 2016
Accepted: November 13, 2016
Article in press: November 13, 2016
Published online: December 21, 2016