Whi, Wonseok
Ha, Seunggyun
Bae, Sungwoo
Choi, Hongyoon
Paeng, Jin Chul
Cheon, Gi Jeong
Kang, Keon Wook
Lee, Dong Soo
Article History
Received: 15 April 2020
Revised: 1 June 2020
Accepted: 4 June 2020
First Online: 14 June 2020
Compliance with Ethical Standards
:
: Wonseok Whi, Seunggyun Ha, Sungwoo Bae, Hongyoon Choi, Jin Chul Paeng, Gi Jeong Cheon, Keon Wook Kang, and Dong Soo Lee declare that there is no conflict of interest. There is no source of funding.
: All procedures followed were performed in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1975, as revised in 2013. The study design of the retrospective analysis and exemption of informed consent were approved by the Institutional Review Board of the Seoul National University Hospital (2001–146-1097). This manuscript has not been published before or is not under consideration for publication anywhere else and has been approved by all co-authors.