Funding for this research was provided by:
National Research Foundation of Korea (2016M3C7A1913844, 2016941946)
Ministry of Science ICT and Future Planning (NRF-2014M3C7A1046042)
Received: 11 January 2021
Accepted: 2 June 2021
First Online: 10 June 2021
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This study was approved by the Institutional Review Boards of the Seoul National University Hospital and the Severance Hospital. All participants provided their written informed consent.
: Informed consent was obtained from all individual participants included in the study.
: Suhong Kim, Kyeong Taek Oh, Min Soo Byun, Dahyun Yi, Jun Ho Lee, Yu Kyeong Kim, Byoung Seok Ye, Mi Jin Yun, Dong Young Lee, and Yong Jeong report no conflicts of interest.