©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.
Serum anti-Helicobacter pylori antibody titer and its association with gastric nodularity, atrophy, and age: A cross-sectional study
Osamu Toyoshima, Toshihiro Nishizawa, Kosuke Sakitani, Tadahiro Yamakawa, Yoshiyuki Takahashi, Gastroenterology, Toyoshima Endoscopy Clinic, Tokyo 157-0066, Japan
Nobutake Yamamichi, Kazuhiko Koike, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
Keisuke Hata, Department of Surgical Oncology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
Yasuyuki Seto, Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
Hidenobu Watanabe, Pathology and Cytology Laboratory Japan, Tokyo 166-0003, Japan
Hidekazu Suzuki, Medical Education Center, Keio University School of Medicine, Tokyo 160-8582, Japan
Author contributions: All authors were involved in designing the study; Toyoshima O, Nishizawa T, Sakitani K, and Suzuki H prepared the manuscript; Toyoshima O was involved with statistical analysis.
Institutional review board statement: This retrospective study was approved by the Ethical Review Committee of Hattori Clinic on September 7, 2017.
Informed consent statement: Written informed consent was obtained from all participants.
Conflict-of-interest statement: During the last five years, Yamamichi N received funds for the research from Denka Seiken Co., Ltd.
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: Osamu Toyoshima, MD, Director, Gastroenterology, Toyoshima Endoscopy Clinic, 6-17-5 Seijo, Setagaya-ku, Tokyo 157-0066, Japan. firstname.lastname@example.org
Telephone: +81-3-54299555 Fax: +81-3-54299511
Received: July 17, 2018
Peer-review started: July 17, 2018
First decision: July 31, 2018
Revised: August 2, 2018
Accepted: August 24, 2018
Article in press: August 24, 2018
Published online: September 21, 2018