1 Centro Cardiologico Monzino, IRCCS, Milan, Italy. Electronic address: gianluca.pontone@ccfm.it.
2 Loyola University of Chicago, Chicago, IL, USA; Edward Hines Jr. VA Hospital, Hines, IL, USA.
3 Institute of Cardiovascular Disease, Department of Emergency and Organ Transplantation, University Hospital "Policlinico Consorziale" of Bari, Bari, Italy.