Kim, Yeon-Ji
Chung, Woo Chul/
Jun, Kyong-Hwa
Chin, Hyung-Min
Article History
Received: 31 January 2018
Accepted: 10 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board at St. Vincent Hospital (VC09TISI0005) and was conducted in accordance with the guidelines of the Declaration of Helsinki for biomedical research. Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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