Lee, Ji Ho
Rhyou, In Hyeok
Ahn, Kee Baek
Article History
Received: 4 November 2019
Accepted: 28 August 2020
First Online: 8 September 2020
Compliance with ethical standards
:
: Each author certifies that he or she has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article.
: This study has been performed in accordance with the ethical standards in the 1964 Declaration of Helsinki. This study has been approved by Pohang SM Christianity Hospital Institutional Review Board: IRB No: PSMCHIRB-16-01.