1. Department of Medicine, Kawasaki Municipal Ida Hospital,
2-27-1 Ida, Nakahara-ku 211-0035 Kawasaki, Japan
2. Department of Pathology, Kawasaki Municipal Ida Hospital,
Kawasaki, Japan
3. Department of Pathology, National Hospital Organization Hakone National Hospital,
Odawara, Japan
4. Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine,
Kyoto, Japan