Luca Longobardo1, Concetta Zito1, Bijoy K Khandheria2. 1. Department of Clinical and Experimental Medicine - Section of Cardiology, University of Messina, Azienda Ospedaliera Universitaria "Policlinico G. Martino" and Universita' degli Studi di Messina, Via Consolare Valeria n.12, 98100 Messina, Italy. 2. Aurora Cardiovascular Services, Aurora Sinai/Aurora St. Luke's Medical Centers, University of Wisconsin School of Medicine and Public Health, 2801 W. Kinnickinnic River Parkway, #840, Milwaukee, WI 53215, USA khandheria.b@gmail.com.