Kang, Choeum
Yoon, Haesung
Shin, Hyun Joo
Eun, Ho Sun
In Park, Kook
Lee, Mi-Jung http://orcid.org/0000-0003-3244-9171
Article History
Received: 14 September 2020
Accepted: 11 February 2021
First Online: 19 February 2021
Ethics approval and consent to participate
: - Institutional review board of Severance Hospital approved this retrospective study (IRB number, 4–2019-0366) and the requirement for obtaining informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.