1 GVM Care & Research, Department of Cardiovascular Surgery, Anthea Hospital, Via Camillo Rosalba 35/37, 70124 Bari, Italy; Bristol Heart Institute, The Bristol Medical School, Faculty of Health Sciences, University of Bristol, Bristol, United Kingdom. Electronic address: m.moscarelli@imperial.ac.uk.
2 GVM Care & Research, Department of Cardiovascular Surgery, Anthea Hospital, Bari, Italy.