[1] Hokkaido Univ, Fac Med, Dept Rheumatol Endocrinol & Nephrol, Sapporo, Japan
[2] Hokkaido Univ, Grad Sch Med, Sapporo, Japan
[3] Hokkaido Univ, Inst Genet Med, Grad Sch Med, Div Mol Psychoimmunol, Sapporo, Japan
[4] Okayama Univ, Grad Sch Med, Dept Nephrol Rheumatol Endocrinol & Metab, Okayama, Japan
[5] Hokkaido Univ, Inst Genet Med, Ctr Infect Canc, Sapporo, Japan