1. From the New York Nephrology Vasculitis and Glomerular Center and the Department of Medicine, St. Peter’s Hospital — both in Albany (F.B.C.); and the Departments of Medicine (F.B.C., E.P.R., R.S., J.H.S.), Radiology (S.G.), and Pathology (R.B.C.), Massachusetts General Hospital, and the Departments of Medicine (F.B.C., E.P.R., R.S., J.H.S.), Radiology (S.G.), and Pathology (R.B.C.), Harvard Medical School — both in Boston.