Choi, Jin Hwa
Lee, Jeong Kyu http://orcid.org/0000-0001-9797-9945
Article History
Received: 22 April 2020
Accepted: 9 September 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: The institutional review board of Chung-Ang University Hospital approved this study (IRB No 2003–009-19308), and the requirement for informed consent was waived considering its retrospective design. This study adheres to the guidelines of the Declaration of Helsinki. We have read and understood your journal’s policies, and we believe that neither the manuscript nor the study violates any of these.
: Not applicable.
: The authors declare that they have no competing interests.