Jeon, Heewon
Lee, Shi-Uk
Lim, Jae-Young
Chung, Sun Gun
Lee, Soong Joon
Lee, Sang Yoon http://orcid.org/0000-0002-2906-3094
Article History
Received: 16 October 2018
Accepted: 14 December 2018
First Online: 7 January 2019
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: This study was approved by the Korea Centers for Disease Control and Prevention Institutional Review Board and was conducted in compliance with Declaration of Helsinki.
: For this type of study, formal consent is not required.