1. Rheumatology Unit, University of Messina, Messina, Italy
2. Cardiology Unit, Beato Matteo Hospital, GSD Hospitals, Vigevano, Pavia, Italy
3. Cardiology Unit, Brotzu Hospital, Cagliari, Italy
4. Rheumatology Unit, ASST Fatebenefratelli- Sacco, University of Milan, Milan, Italy