Kim, You Ie
Joo, Jung Yeon
Yang, Hye Ran
Article History
Received: 10 November 2021
Accepted: 21 January 2022
First Online: 3 February 2022
Declarations
:
: The study was approved by the Institutional Review Board of Seoul National University Bundang Hospital (No. B-2012-654-110). Also the IRB/ethics committee of the SNUBH has waived informed consent for this study because of the retrospective nature of this study. In addition this study was performed in accordance with the Declaration of Helsinki and the approved guidelines and regulations.
: Not applicable.
: All authors have no competing interest to declare.