Funding for this research was provided by:
CJ healthcare 2016 research fund
Text and Data Mining valid from 2020-04-23
Received: 13 June 2019
Accepted: 31 March 2020
First Online: 23 April 2020
Ethics approval and consent to participate
: The study design was approved by the local ethics committee (Seoul National University Hospital) and was conducted according to the Declaration of Helsinki.
: Written informed consent was obtained from all study participants.
: Dr. Hyung-Kwan Kim reports research grants from Actelion, Handok Pharmaceuticals, Dae-Woong Pharmaceuticals, and Norvatis. Dr. Jung-Hwan Yoon reports research grants from Bayer HealthCare Pharmaceuticals and AstraZeneca; and Dr. Yoon Jun Kim, research grants from BTG, Bayer HealthCare Pharmaceuticals, Ono, AstraZeneca, Roche, LG Life Science, and Bristol-Myers Squibb, lecture fees from Bayer HealthCare Pharmaceuticals and Gilead Science, and serving as an advisory board member or consultant of Gilead Science, Bayer HealthCare Pharmaceuticals, Ono, and AbbVie. All other authors report no conflict of interest.