1. Department of Medicine, Hanyang University College of Medicine, Seoul, Korea
2. Biostatistical Consulting and Research Lab, Medical Research Collaborating Center, Hanyang University, Seoul, Korea
3. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
4. Department of Radiology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
5. Hanyang University Institute for Rheumatology Research, Seoul, Korea