1. Department of Cardiovascular and Respiratory Sciences, Sapienza University of Rome, Rome, Italy
2. Department of Cardiology, Monaldi Hospital, University L. Vanvitelli, Naples, Italy
3. Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico S Matteo, Pavia, Italy
4. Department of Cardiology, F.Miulli Hospital, Acquaviva delle Fonti, Bari, Italy
5. Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
6. Azienda per la Tutela della Salute Sardegna-Area Socio Sanitaria Locale Nuoro, San Francesco Hospital, Nuoro, Italy
7. Pulmonology Unit, Heart-Thorax-Vessels Department, University Hospital of Cattinara, Trieste, Italy
8. Azienda Ospedaliera G. Brotzu San Michele, Cagliari, Italy
9. Cardiology Department, Ospedali Riuniti University Hospital, Foggia, Italy
10. Cardiology Department, University Hospital Policlinico Consorziale Bari, Italy
11. Cardiologia, Università degli studi di Brescia, Brescia, Italy
12. Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
13. Ferrarotto Hospital, Catania, Italy
14. Dipartimento Cardio-Toraco-Vascolare, Clinica Pneumologica, Azienda Ospedaliera San Gerardo, Monza, Italy
15. Cardiovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
16. Pulmonology Unit, Istituti di Ricovero e Cura a Carattere Scientifico, Istituto Mediterraneo Trapianti e Terapie ad Alta Specializzazione, Palermo, Italy; and
17. Department of Pathophysiology, Free University of Brussels, Brussels, Belgium