1. Department of Nephrology, Kidney Research Institute, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
2. Department of Internal Medicine, Division of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
3. Department of Pediatrics, Division of Allergy, Asthma and Rheumatology, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
4. Department of Public Health, College of Medicine, Biostatistics Core Laboratory, Molecular Medicine Research Center, Chang Gung University, Taoyuan City, Taiwan
5. Department of Medical Imaging and intervention, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
6. Department of Health Policy and Management, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA