Choi, Ji Soo
Lee, Sang Hoon
Leem, Ah. Young
Song, Joo Han
Chung, Kyung Soo
Jung, Ji Ye
Kang, Young Ae
Park, Moo Suk
Kim, Young Sam
Chang, Joon
Kim, Song Yee http://orcid.org/0000-0001-8627-486X
Article History
Received: 28 October 2018
Accepted: 2 April 2019
First Online: 18 April 2019
Ethics approval and consent to participate
: This study was approved by Institutional review board approval for Severance Hospital (IRB IRB 4-2017-1219). The need for informed consent was waived.
: Not applicable
: The authors declare that they have no competing interests.
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