1. From the Departments of Cardiovascular Surgery (C.V., V.B.-H., F.P., J.J.C.), Pathology (F.S.), and Cardiology (B.B.), Área de Gestión Integrada de A Coruña, A Coruña, Spain; and Department of Surgery, Universidad de Santiago de Compostela, Santiago de Compostela, Spain (V.B.-H.).