1. Department of Internal Medicine, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain
2. Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
3. Fundació Institut Germans Trias i Pujol, Badalona, Barcelona, Spain
4. Department of Internal Medicine, Hospital de Mataró, Spain
5. Department of Internal Medicine, Hospital Universitario 12 de Octubre, Madrid, Spain
6. Department of Internal Medicine, Hospital Universitari de Bellvitge, IDIBELL.L'Hospitalet de Llobregat, Universitat de Barcelona, Barcelona, Spain
7. Department of Internal Medicine, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
8. Department of Medical and Surgical Sciences, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
9. Vascular Medicine and Haemostasis, University of Leuven, Leuven, Belgium
10. Department of Vascular Medicine, Hospital Universitario Fundación Santa Fe de Bogotá, Bogotá, Colombia
11. Department of Internal Medicine, Hospital Universitario A Coruña, Coruña, Spain
12. Division of Internal Medicine, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
13. Faculty of Health Sciences, Universidad Católica San Antonio de Murcia, CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain