1. Department of Occupational and Environmental Medicine, Gachon University Gil Medical Center, Republic of Korea
2. Department of Environmental Sciences, Seoul National University Graduate School of Public Health, Republic of Korea
3. Department of Occupational and Environmental Medicine, Hallym University Sacred Heart Hospital, Republic of Korea
4. Department of Neurology, Gachon University College of Medicine, Republic of Korea
5. Department of Occupational and Environmental Medicine, Gachon University College of Medicine, Republic of Korea
6. Woo-Ri Industrial Health Center, Republic of Korea