1. Division of Rheumatology, Eulji University Hospital, Daejeon, Korea.
2. Division of Rheumatology, Kyung Hee University Medical Center, Seoul, Korea.
3. Division of Rheumatology, Konkuk University Medical Center, Seoul, Korea.
4. Division of Rheumatology, Hanyang University Guri Hospital, Guri, Korea.
5. Division of Rheumatology, Dong-A University Hospital, Busan, Korea.
6. Medical Affairs Asia Oceania, Astellas Pharma, Inc., Singapore.
7. Medical Affairs, Astellas Pharma Korea, Inc., Seoul, Korea.
8. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea.