Funding for this research was provided by:
Ministry of science and ICT (NRF-2019R1F1A1063124)
Asan Institute for Life Sciences, Asan Medical Center (2011-0660)
Article History
Received: 27 April 2020
Revised: 8 July 2020
Accepted: 27 July 2020
First Online: 6 August 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the (place name of the institution and/or national research committee) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The informed consent was waived under the approval of the Institutional Review Board of Asan Medical Center (2018-0815).
: Not applicable (retrospective review of anonymized medical records).
: Not applicable.