J Nagasawa1, K Kurasawa2, R Hanaoka3. 1. Clinical Immunology, Dokkyo Medical University, Tochigi, Japan Department of Rheumatology, Kamitsuga General Hospital, Tochigi, Japan. 2. Clinical Immunology, Dokkyo Medical University, Tochigi, Japan kurasawa@dokkyomed.ac.jp. 3. Department of Rheumatology, Kamitsuga General Hospital, Tochigi, Japan.