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Authors
Nam, Joon Yeul
Choe, A Reum
Sinn, Dong Hyun
Lee, Jeong-Hoon
Kim, Hwi Young https://orcid.org/0000-0003-0723-1285
Yu, Su Jong
Kim, Yoon Jun
Yoon, Jung-Hwan
Lee, Jeong Min
Chung, Jin Wook
Choi, Sun Young
Lee, Jeong Kyong
Baek, Seung Yon
Lee, Hye Ah
Kim, Tae Hun
Yoo, Kwon
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Article History
Received: 16 October 2019
Accepted: 18 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: The present study was approved by the institutional review boards of the three participating institutions (Seoul National University Hospital, Ewha Womans University Medical Center, and Samsung Medical Center) and was conducted following the ethical guidelines of the World Medical Association Declaration of Helsinki. Informed patient consent was waived by the institutional review board of each institution owing to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
