Hwang, Jeongeun
Oh, Yeon-Mok
Lee, Minho
Choi, Seunghyun
Seo, Joon Beom
Lee, Sang Min http://orcid.org/0000-0001-7627-2000
Kim, Namkug
Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016R1D1A1A02937317)
Article History
Received: 17 January 2018
Revised: 20 April 2018
Accepted: 18 May 2018
First Online: 29 June 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Namkug Kim.
: The authors of this article declare no relationships with any companies whose products or services may be related to the subject matter of the article.
: Nayoung Kim kindly provided statistical advice for this manuscript.
: Written informed consent was obtained from all subjects (patients) in this study.
: Institutional Review Board approval was obtained.
: The study subjects are from Korean Obstructive Lung Disease (KOLD) cohort. There are 54 articles by KOLD study group, and more than 100 articles stating the exact phrase “Korean Obstructive Lung Disease”. We suppose that many of those would have a substantial extent of subject overlaps with our current study. However, the key point of our current study was to suggest new imaging biomarkers, and those biomarkers, D box and D size , have never been measured for any of the subjects before, making our current finding novel.
: • retrospective• diagnostic or prognostic study• multicentre study