Choi, Wookhee
Ahn, Ryoungme
Kim, Jae Hyoun
Article History
Received: 18 June 2019
Revised: 9 August 2019
Accepted: 13 August 2019
First Online: 9 January 2020
Ethical Approval
: The KoNEHS data are openly published, with the approval of the Research Ethics Committee of the National Institute of Environmental Research in Korea. Thus, ethical approval was not required for this study.