1 Department of Environmental and Occupational Medicine, National Taiwan University (NTU) College of medicine and NTU Hospital, No. 7, Zhongshan S. Rd., Zhongzheng Dist., Taipei City, Taiwan.
2 Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd., North District, Tainan, 70403, Taiwan.
3 Division of Occupational Hazards Assessment, Institute of Labor, Occupational Safety and Health, Ministry of Labor, No. 99, Ln. 407, Hengke Rd., Xizhi Dist., New Taipei City, 221004 , Taiwan.
4 Department of Environmental and Occupational Medicine, National Taiwan University (NTU) College of medicine and NTU Hospital, No. 7, Zhongshan S. Rd., Zhongzheng Dist., Taipei City, Taiwan; Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, No. 17, Xuzhou Rd., Zhongzheng Dist., Taipei City, Taiwan; National Institute of Environmental Sciences, National Health Research Institutes, No. 35, Keyan Rd., Zhunan Township, Miaoli County, Taiwan. Electronic address: leonguo@ntu.edu.tw.