Dohee Kwon, Ji Yun Yun, Yoon Kyung Jeon, Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, South Korea
Bhumsuk Keam, Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, South Korea
Young Tae Kim, Department of Thoracic Surgery, Seoul National University Hospital, Cancer Research Institute, Genomic Medicine Institute, Seoul National University College of Medicine, Seoul National University College of Medicine, Seoul 03080, South Korea
Author contributions: Kwon D and Yun JY contributed equally to this work; Kwon D and Yun JY collected and analyzed the data and wrote the manuscript; Keam B and Kim YT collected the clinical data; Jeon YK supervised and conducted the study; all authors have read and approved the final version of the manuscript.
Supported by the National Research Foundation for the Global Core Research Center, No. 2016005276; and the Korea Health Technology R&D Project through the Korea Health Industry Development Institute, No. HI14C0069.
Institutional review board statement: This study was reviewed and approved by Institutional Review Board of SNUH (H-1405-055-579).
Conflict-of-interest statement: The authors declare no conflict of interests.
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: Yoon Kyung Jeon, MD, PhD, Department of Pathology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 03080, South Korea. firstname.lastname@example.org
Telephone: +82-2-20721347 Fax: +82-2-7435530
Received: August 21, 2016
Peer-review started: August 24, 2016
First decision: September 5, 2016
Revised: September 20, 2016
Accepted: September 28, 2016
Article in press: September 28, 2016
Published online: November 28, 2016