1. Angiology Unit, Azienda ULSS 2 Marca Trevigiana, Castelfranco Veneto, Italy
2. Médecine Vasculaire, Université de Montpellier, Montpellier, France
3. Division of Angiology, Heart and Vessel Department, Lausanne University Hospital, Lausanne, Switzerland
4. Internal Medicine Unit, Moscati Hospital, Avellino, Italy
5. Department of Vascular Surgery, International Center of Deep Venous Surgery, Hesperia Hospital, Modena, Italy
6. Clinic of Angiology, Comenius University and National Institute of Cardiovascular Diseases, Bratislava, Slovakia
7. Arianna Foundation, Bologna, Italy