[1] Tokyo Womens Med Univ, Inst Rheumatol, Tokyo, Japan
[2] Tokyo Med & Dent Univ, Tokyo, Japan
[3] Japanese Red Cross Med Ctr, Tokyo, Japan
[4] Nagoya Univ, Grad Sch, Nagoya, Aichi 4648601, Japan
[5] Nagoya Univ, Fac Med, Nagoya, Aichi 4648601, Japan
[6] Nihon Univ Sch Med, Tokyo, Japan
[7] Kagoshima Univ, Sch Hlth Sci, Kagoshima 890, Japan
[8] Keio Univ Sch Med, Tokyo, Japan
[9] Univ Occupat & Environm Hlth, Kitakyushu, Fukuoka 807, Japan
[10] Chugai Pharmaceut Co Ltd, Tokyo, Japan
[11] Sapporo Med Ctr NTT EC, Sapporo, Hokkaido, Japan