1. Department of Health Informatics & Management College of Medicine Chungbuk University Cheongju Chungcheongbuk‐do Korea
2. Divison of Rheumatology Department of Internal Medicine Inha University Incheon Korea
3. Department of Preventive Medicine College of Medicine Korea University Seoul Korea
4. Medical Research Institute College of Medicine Ewha Womans University Seoul Korea
5. Department of Public Health, Graduate School Korea University Seoul Korea
6. Department of Research Health Insurance Review & Assessment Service Wonju Korea