1. School of Dentistry, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Division of Molecular Diagnosis, Department of Clinical Laboratory, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
3. National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli County, Taiwan
4. Department of Health Business Administration, Hungkuang University, Taichung, Taiwan
5. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
6. Department of Environmental and Occupational Health, National Cheng Kung University, Tainan, Taiwan
7. Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
8. Department of Environmental and Occupational Medicine, College of Medicine, National Taiwan University (NTU) and NTU Hospital, Taipei, Taiwan