1. Division of Cardiology, Department of Internal Medicine, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan
2. Division of Nephrology, Department of Internal Medicine, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan
3. Division of Endocrinology and Metabolism, Department of Internal Medicine, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan
4. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan
5. Laboratory for Epidemiology, Department of Health Care Management, Chang Gung University, Taoyuan 333, Taiwan
6. Department of Health Care Management, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
7. Department of Emergency Medicine, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
8. Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
9. Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan