Choi, Yoon-Hyeong
Park, Su Jin
Paik, Hae Jung
Kim, Mee Kum
Wee, Won Ryang
Kim, Dong Hyun http://orcid.org/0000-0002-3985-990X
Funding for this research was provided by:
Gachon University Gil Medical Center (GCU-2016-5202)
Article History
Received: 26 April 2017
Accepted: 11 January 2018
First Online: 1 February 2018
Compliance with ethical standards
: This study was approved by the Institutional Review Board of the Korea Centers for Disease Control and Prevention and complied with the tenets of the Declaration of Helsinki.
: The authors declare that they have no conflict of interest.