Received: 13 March 2020
Accepted: 8 June 2020
First Online: 13 June 2020
Ethics approval and consent to participate
: This study was approved by the institutional review board of Seoul National University Hospital (E-1811-130-987). Informed consent was waived due to the retrospective nature of the study and anonymized data.
: Not applicable.
: EKC reports research grants from Sanofi-Aventis, Chong Kun Dang, Daiichi-Sankyo, BMS/Pfizer, Biosense Webster, and Skylabs. GYHL reports activities as consultant for Bayer/Janssen, BMS/Pfizer, Medtronic, Boehringer Ingelheim, Novartis, Verseon, Daiichi-Sankyo, and as speaker for Bayer, BMS/Pfizer, Medtronic, Boehringer Ingelheim, and Daiichi-Sankyo. No fees are received personally. All other authors report none.