1. Department of Dermatology, University of Bonn, Bonn, Germany
2. Department of Dermatology, Medical University of Vienna, Vienna, Austria
3. Center for Vein Restoration, Mesa, AZ, USA
4. Department of Surgery, Harborview Medical Center, Seattle, WA, USA
5. Angiology Department, Clinica MD Barbantini, Lucca, Italy
6. Josef Pflug Vascular Laboratory, West London Vascular and Interventional Centre, Ealing Hospital & Imperial College, London, UK
7. Centre de Recherche Universitaire de La Léchère, Equipe THEMAS, Université Joseph Fourier, Grenoble, France
8. SIGVARIS Management AG, Winterthur, Switzerland
9. Department of Dermatology, University of Greifswald, Greifswald, Germany
10. Department of General Surgery, Vascular Surgery, Angiology and Phlebology, Medical University of Silesia, Katowice, Poland
11. Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
12. First Choice Vascular, Swastik Society, Ahmedabad, India
13. Department of Podiatric Surgery & Applied Biomechanics, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
14. Department of Vascular Surgery, The University of Chicago, Chicago, IL, USA
15. Department of Vascular Surgery, University of Michigan, Ann Arbor, MI, USA
16. Practice for Internal Medicine and Vascular Diseases, Halle, Germany