1. Department of Cardiac Surgery, Istituto di ricovero e cura a carattere scientifico, San Donato Milanese Hospital, San Donato Milanese, Italy
2. Department of Cardiac Surgery, Tor Vergata University of Rome, Rome, Italy
3. Department of Anesthesiology, Reanimation Mother Teresa University, Tirana, Albania
4. Department of Biomedical Sciences and Specialized Surgery, University of Ferrara, Ferrara, Italy