[1] Fukushima Med Univ, Sch Med, Dept Rheumatol, 1 Hikarigaoka, Fukushima, Fukushima 9601295, Japan
[2] Ohta Nishinouchi Gen Hosp Fdn, Dept Rheumatol, 2-5-20 Nishinouchi, Koriyama, Fukushima 9638558, Japan
[3] NHO Nagasaki Med Ctr, Clin Res Ctr, Kubara 2-1001-1, Omura, Nagasaki 8568562, Japan
[4] Nagasaki Univ, Grad Sch Biomed Sci, Unit Translat Med, Dept Immunol & Rheumatol, Sakamoto 1-7-1, Nagasaki 8528501, Japan
[5] Fukushima Med Univ, Sch Med, Dept Gastroenterol, 1 Hikarigaoka, Fukushima, Fukushima 9601295, Japan
[6] Fukushima Med Univ, Sch Med, Dept Immunol, 1 Hikarigaoka, Fukushima, Fukushima 9601295, Japan