Nam, Ga Eun
Cho, Kyung Hwan
Han, Kyungdo
Kim, Chul Min
Han, Byoungduck
Cho, Sung Jung
Jung, Seung Jin
Kwon, Yeongkeun
Kim, Yang Hyun
Kim, Do Hoon
Kim, Seon Mee
Choi, Youn Seon
Roh, Yong Kyun
Park, Yong Gyu
Article History
Received: 16 December 2018
Revised: 10 May 2019
Accepted: 21 May 2019
First Online: 24 June 2019
Competing interests
: The authors declare no competing interests.
: The study protocol was evaluated and approved by the Institutional Review Board of the Catholic University of Korea, St. Mary’s Hospital (IRB number: KC16EISI0939). This study was performed in accordance with the Declaration of Helsinki.
: None.
: Not applicable.
: Data are available through the Korean National Health Insurance Sharing Service (NHISS). Researchers who wish to access the data can apply at (ExternalRef removed).