Hideki Aoki, Masashi Utsumi, Kenta Sui, Nobuhiko Kanaya, Tomoyoshi Kunitomo, Hitoshi Takeuchi, Department of Surgery, Iwakuni Clinical Center, Iwakuni 7408510, Japan
Norihisa Takakura, Department of Surgery, Fukuyama City Hospital, Fukuyama 7218511, Japan
Shigehiro Shiozaki, Hiroyoshi Matsukawa, Department of Surgery, Hiroshima City Hospital, Hiroshima 7308518, Japan
Author contributions: Aoki H, Utsumi M, Sui K, Kanaya N and Kunitomo T performed operations; Takeuchi H supervised the research; Aoki H, Takakura N, Shiozaki S and Matsukawa H established milk test; Aoki H wrote this paper.
Institutional review board statement: This study was reviewed and approved by the Iwakuni Clinical Center Institutional Review Board.
Informed consent statement: Patients were not required to give informed consent to this study because the analysis used anonymous clinical data that were obtained after each patient agreed to treatment by written consent.
Conflict-of-interest statement: The author declares no conflicts of interest.
Data sharing statement: Participants gave informed consent for data sharing.
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: Hideki Aoki, MD, Operation Director, Department of Surgery, Iwakuni Clinical Center, 1-1-1 Atago, Iwakuni 7408510, Japan. firstname.lastname@example.org
Telephone: +81-827-341000 Fax: +81-827-355600
Received: June 17, 2015
Peer-review started: June 17, 2015
First decision: August 24, 2015
Revised: September 5, 2015
Accepted: December 13, 2015
Article in press: December 15, 2015
Published online: March 27, 2016