Lee, Heui Seung
Kim, Moinay
Park, Jung Cheol
Ahn, Jae Sung
Lee, Seungjoo
Park, Wonhyoung http://orcid.org/0000-0002-9977-0595
Article History
Received: 11 October 2020
Revised: 17 December 2020
Accepted: 5 January 2021
First Online: 19 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (name of institute/committee) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study, retrospective formal consent from patients is not required.
: For this type of retrospective study, formal consent is not required.
: SPSS version 22.0 (IBM, Armonk, NY, USA) was used for all statistical analyses