Kim, A Ram
Kim, Dae Yun
Kim, Ji Soo
Lee, Heun
Sung, Joo Hyun
Yoo, Cheolin https://orcid.org/0000-0002-0742-4231
Article History
Received: 27 September 2018
Accepted: 1 February 2019
First Online: 1 March 2019
Ethics approval and consent to participate
: This study was conducted with the approval of the institutional review board of Ulsan University Hospital (ID: 2018–07–040-001).
: Not applicable.
: The authors declare that they have no competing interests, either now or future.
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