Affiliation: | (1) Division of Rheumatology, Department of Medicine, Juntendo University, School of Medicine, 2-1-1, Hongo, Bunkyo-ku, 113 Tokyo, Japan;(2) Department of Medicine, Izu-Nagaoka Hospital, Juntendo University, School of Medicine, 1129 Nagaoka-cho, Tagata-gun, 410-22 Shizuoka, Japan;(3) Department of Microbiology, Tokyo Medical and Dental University, School of Medicine, 1-5-45, Yushima, Bunkyo-ku, 113 Tokyo, Japan |