Funding for this research was provided by:
Ministry of Health and Welfare (#1520160)
Article History
Received: 6 June 2018
Revised: 23 October 2018
Accepted: 19 November 2018
First Online: 17 December 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Myeong-Jin Kim.
: Myeong-Jin Kim is a recipient of a grant from Bayer HealthCare, which is not related to this study.
: No complex statistical methods were necessary for this paper.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: Some study subjects or cohorts have been previously reported in Rhee et al [CitationRef removed].
: • Retrospective• Observational• Performed at one institution