1. Department of Internal Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Korea
2. Division of Rheumatology, Seoul National University Hospital Seoul National University College of Medicine Seoul Korea
3. Department of Pathology, Seoul National University Hospital Seoul National University College of Medicine Seoul Korea
4. Department of Pediatrics, Seoul National University Children's Hospital Seoul National University College of Medicine Seoul Korea
5. Division of Rheumatology Seoul Metropolitan Government‐Seoul National University Boramae Medical Center Seoul Korea