[1] Wakayama Med Univ, Dept Rheumatol & Clin Immunol, Wakayama, Japan
[2] Hokkaido Univ, Sapporo, Hokkaido, Japan
[3] Osaka Med Coll, Takatsuki, Osaka, Japan
[4] Nagoya Univ, Grad Sch Med, Nagoya, Aichi, Japan
[5] Juntendo Univ, Fac Med, Dept Internal Med & Rheumatol, Tokyo, Japan
[6] Ueno Touseki Clin, Fukuoka, Japan
[7] Mie Univ Hosp, Ctr Rheumat Dis, Tsu, Mie, Japan
[8] Matsuno Clin Rheumat Dis, Toyama, Japan
[9] Eli Lilly Japan KK, Kobe, Hyogo, Japan
[10] Keio Univ, Div Rheumatol, Tokyo, Japan
[11] Nippon Med Sch, Grad Sch Med, Dept Allergy & Rheumatol, Tokyo, Japan
[12] Yamagata Univ, Fac Med, Dept Orthopaed Surg, Yamagata, Japan