Prior minimal endoscopic sphincterotomy to prevent pancreatitis related to endoscopic balloon sphincteroplasty
Ryo Kanazawa, Jin Kan Sai, Tomoyasu Ito, Hiroko Miura, Shigeto Ishii, Hiroaki Saito, Ko Tomishima, Ryo Shimizu, Koki Sato, Manabu Hayashi, Sumio Watanabe, Shuichiro Shiina, Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 113-8421, Japan
Author contributions: Kanazawa R and Sai JK contributed equally to this work; Kanazawa R collected and analyzed the data, and drafted the manuscript; Sai JK provided analytical oversightand designed and supervised the study; Watanabe S and Shiina S revised the manuscript for the important intellectual content; Ito T, Miura H, Ishii S, Saito H, Tomishima K, Shimizu R, Sato K and Hayashi M supported collecting the data; all authors have read and approved the final version to be published.
Institutional review board statement: This study was approved by the Institutional Review Board of Juntendo University.
Clinical trial registration statement: In the study period (October 2010 - March 2014), clinical trial registration was not required for our prospective study.
Informed consent statement: Written informed consent for the procedures and treatment was obtained from patients or their next of kin in accordance with normal clinical practice.
Conflict-of-interest statement: No conflict of interests.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at firstname.lastname@example.org. Participants gave informed consent was not obtained but the presented data are anonymized and risk of identification is low.
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: Jin Kan Sai, MD, Department of Gastroenterology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. email@example.com
Telephone: +81-3-58021061 Fax: +81-3-56845960
Received: February 2, 2016
Peer-review started: February 9, 2016
First decision: March 23, 2016
Revised: July 18, 2016
Accepted: August 6, 2016
Article in press: August 8, 2016
Published online: October 16, 2016