Corresponding Author

Department of Occupational and Environmental Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea

Correspondence to:

Wanhyung Lee,

Department of Occupational and Environmental Medicine, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774, Incheon, Republic of Korea, [21565] Tel: +82-32-460-8866 Fax: +82-504-374-7000

(wanhyung@gmail.com)

Contribution: Conceptualization, Methodology, Software, Validation, Formal analysis, ​Investigation, Data curation, Writing - original draft, Visualization, Supervision, Project administration, Funding acquisition