1 Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taiwan; Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taiwan. Electronic address: d09852003@ntu.edu.tw.
2 Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taiwan; Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taiwan.
3 Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taiwan. Electronic address: jkchen29@ntu.edu.tw.