Park, Heyeon
Kim, Johanna Inhyang
Min, Beomjun
Oh, Sohee
Kim, Jeong-Hyun
Article History
Received: 20 June 2019
Accepted: 4 December 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Institutional Review Board of Seoul National University Bundang Hospital (IRB No: X-1807-483-907). As all data was entered in a completely anonymized manner, consent to participate was not required.
: As completely anonymized observational data was used (see “Ethics approval and consent to participate”), consent for publication was not required.
: The authors declare that they have no competing interests.