1. Department of Internal Medicine, Angiology and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15 Street, 41-902 Bytom, Poland
2. Vascular Independent Research and Education, European Foundation, 20157 Milan, Italy
3. VAS-International Consortium—International No More Venous Ulcers Strategic Network, 20157 Milan, Italy
4. Angiology Department, MD Barbantini Clinic, Via del Calcio 2, 55100 Lucca, Italy
5. Department of Specialized Surgery, Central Hospital of Ministry of Internal Affairs, Chimboy St. 2 A, Almazar District, Tashkent 100095, Uzbekistan
6. Department of Dermatology, Venereology and Allergology, University Hospital, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
7. Dermatovenereological Clinic, University Medical Centre Ljubljana, Gradiskova 10 Street, 1000 Ljubljana, Slovenia
8. Department of Internal Medicine, University of Algiers, Bachir Mentouri Hospital, Algiers 16208, Algeria
9. 4th Department of Internal Medicine, General Hospital of Evangelismos, 16676 Athens, Greece
10. Department of Medicine, Portiuncula University Hospital, University of Galway, H91 TK33 Galway, Ireland
11. Support Association of Patients of Buerger’s Disease, Buerger’s Disease NGO, Mashhad 9183785195, Iran
12. Department of Biomedical, Clinical Sciences L Sacco Hospital, Inter-University Research Center on Vascular Disease, University of Milan, 20157 Milan, Italy
13. Department of Vascular Surgery, Apollo CVHF, Heart Institute, Ahmedabad 380059, India