1. From the Departments of Medicine (J.A.F., M.B.R.) and Radiology (E.W.Z.), Massachusetts General Hospital, and the Departments of Medicine (J.A.F., M.B.R.) and Radiology (E.W.Z.), Harvard Medical School — both in Boston; the Division of Infectious Diseases and Transplant Center, University Health Network and University of Toronto, Toronto (D.K.); the Transplantation and Clinical Virology Unit, Department of Biomedicine, University Hospital Basel, Basel, Switzerland (H.H.H.); and the Nephrology Unit,...