1. Division of Diabetes, Endocrinology and Clinical Immunology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
2. Department of Respiratory Medicine and Rheumatology, Suita Municipal Hospital, Suita, Japan
3. Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
4. Department of Rheumatology, Nishinomiya Watanabe Hospital, Nishinomiya, Japan
5. Department of Rheumatology, Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Japan
6. Department of Rheumatology, Sumitomo Hospital, Osaka, Japan
7. Yukioka Hospital, Osaka, Japan