1. From the Department of Internal Medicine, Section of Cardiology (D.S., M.B.P., A.T., D.L., M.J., P.E., S.B.F.), Rush University Medical Center, Chicago, Ill; Unitat de Diagnòstic i Tractament de Malalties Aterotrombòtiques (UDETMA) (B.C.), Hospital Arnau de Vilanova, Lleida, Spain; and the Department of Angiology (K.A.J.), University Hospital, Basel, Switzerland.