Lee, Seok-Jin http://orcid.org/0000-0001-7894-8510
Sung, Tae-Yun http://orcid.org/0000-0002-0714-1477
Cho, Choon-Kyu http://orcid.org/0000-0001-9906-1396
Article History
Received: 27 August 2019
Accepted: 8 December 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Konyang University Hospital, Daejeon, Korea (October 2017; KYUH 2017–07–020-001) and written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.