Institution: | (1) Division of Nephrology and Rheumatology, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan;(2) Division of Pathology, National Center for Child Health and Development, Tokyo, Japan;(3) Department of Pathology, National Hospital Organization Chiba-East-Hospital, Chiba, Japan;(4) Department of Medicine II, Hokkaido University, Sapporo, Japan; |