1. Department of Internal Medicine, National Yang-Ming University Hospital, Yilan, Taiwan;
2. Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan;
3. Dr. Yen’s clinic, Taoyuan City, Taiwan;
4. Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan;
5. Section of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan;
6. Division of Clinical Toxicology & Occupation Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan;
7. Institute of Environmental & Occupational Health Sciences, School of Medicine, National Yang-Ming University, Taipei, Taiwan