[1] Japanese Red Cross Kumamoto Hosp, Dept Rheumatol, Kumamoto, Japan
[2] Teikyo Univ, Chiba Med Ctr, Dept Rheumatol, Ichihara, Chiba, Japan
[3] Kameda Med Ctr, Emergency & Trauma Ctr, Kamogawa City, Japan
[4] Tokyo Med & Dent Univ, Hosp Med, Trauma & Acute Crit Care Med Ctr, Tokyo, Japan
[5] Sagamihara Natl Hosp, Clin Res Ctr Allergy & Rheumatol, Sagamihara, Kanagawa, Japan
[6] Natl Hosp Org, Tokyo Natl Hosp, Tokyo, Japan