Min, Jinsoo
Kim, Ju Sang
Kim, Hyung Woo
Shin, Ah Young
Koo, Hyeon-Kyoung
Lee, Sung-Soon
Kim, Yang-Ki
Shin, Kyeong-Cheol
Chang, Jung Hyun
Chun, Gayoung
Lee, Joosun
Park, Mi Sun
Park, Jae Seuk
Article History
Received: 24 February 2019
Accepted: 7 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki. The Korea Centers for Disease Control and Prevention (KCDC), South Korea, has authority to hold and analyse surveillance data for public health and research purpose. Mi Sun Park of the KCDC has granted permission to access the raw data.
: Not applicable.
: All authors declare that they have no competing interests.