Kim, Heejung
Chang, Ah Ram
Cho, Sungwoo
Ye, Sung-Joon
Article History
Received: 18 November 2017
Accepted: 13 August 2018
First Online: 3 September 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Soonchunhyang University Seoul Hospital. (IRB number: 2014–11-029).
: Not applicable.
: The authors declare that they have no competing interests.
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