Author contributions: Çiftçi F designed research; performed research; contributed to new reagents or analytic tools; analyzed data; wrote the paper; performed surgical operations.
Supported by General Surgery Department Safa Hospital, Istanbul, Turkey.
Institutional review board statement: The study was reviewed and approved by the Safa Hospital Institutional Review Board.
Informed consent statement: All study participants, or their legal guardian, provided informed written consent prior to study enrollment.
Conflict-of-interest statement: Çiftçi F hasn’t received fees for serving as a speaker, any of organisations. Çiftçi F hasn’t received research funding from any of organisations. Çiftçi F isn’t any employee of organisations.
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: Fatih Çiftçi, MD, Assistant Professor, Vocational School of Health Services, Istanbul Gelisim University, Basaksehir Mah., Erciyes Sok. No 15, Daire 24, Basaksehir, Istanbul 34306, Turkey. firstname.lastname@example.org
Telephone: +90-505-6164248 Fax: +90-212-4627056
Received: March 27, 2015
Peer-review started: March 28, 2015
First decision: April 24, 2015
Revised: May 10, 2015
Accepted: August 28, 2015
Article in press: September 7, 2015
Published online: October 27, 2015