Endoscopic retrograde cholangiopancreatography for suspected choledocholithiasis: From guidelines to clinical practice
    
    
        Joana Magalhães, Bruno Rosa, José Cotter, Gastroenterology Department,  Centro Hospitalar do Alto Ave,  4835-044 Guimarães,  Portugal
José Cotter, Life and Health Sciences Research Institute (ICVS),  School of Health Sciences,  University of Minho,  4710-057 Braga,  Guimarães,  Portugal
José Cotter, ICVS/3B’s,  PT Government Associate Laboratory,  4710-057 Braga,  Guimarães,  Portugal
     
    
        Author contributions:  Magalhães J participated in the design of the study, performed data analysis and literature research and drafted the manuscript; Rosa B performed literature research and critically revised the manuscript; Cotter J critically revised the manuscript and approved the final version to be submitted; all the authors read and approved the final manuscript.
Ethics approval:  This study was approved by the institutional review board of Centro Hospitalar do Alto Ave, Guimarães, Portugal.
Informed consent:  All patients provided written consent to undergo endoscopic retrograde cholangiopancreatography and were informed of the risks and potential benefits of the procedure.
Conflict-of-interest:  The authors declare that there is no conflict of interests regarding the publication of this paper.
Data sharing:  Technical appendix, statistical code, and dataset available from the corresponding author at jmagalhaes@chaa.min-saude.pt. The consent of the participants 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:  Joana Magalhães, MD, Gastroenterology Department, Centro Hospitalar do Alto Ave, Rua dos Cutileiros, Creixomil, 4835-044 Guimarães, Portugal. 
jmagalhaes@chaa.min-saude.pt 
Telephone:  +351-253-540330 Fax: +351-253-421308
Received: September 17, 2014
Peer-review started:  September 20, 2014
First decision:  October 14, 2014
Revised: December 14, 2014
Accepted: December 29, 2014
Article in press:  December 31, 2014
Published online: February 16, 2015
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