From the National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, Rome, Italy (S.R., P.D., F. Seccareccia); Division of Cardiac Surgery, IRCCS S Martino, University Hospital, Genova, Italy (F. Santini); Division of Cardiology, Ferrarotto Hospital, University of Catania, Italy (M.B., C.T.); Department of Surgery, Oulu University Hospital, Oulu, Finland (F.B.); Division of Cardiac Surgery, University of Verona Medical School, Verona, Italy (F.O.); Department... (At 2016-05)