1. Department of Dermatology, University of Bonn, Bonn, Germany
2. Department of Dermatology, Medical University of Vienna, Austria
3. Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
4. Josef Pflug Vascular Laboratory, West London Vascular and Interventional Centre, Ealing Hospital & Imperial College, London, UK
5. Angiology Department, Clinica MD Barbantini, Lucca, Italy
6. Department of Dermatology, Erasmus University Hospital, Rotterdam, The Netherlands
7. Medical University of Silesia Department of General Surgery, Vascular Surgery, Angiology and Phlebology, Katowice, Poland
8. SIGVARIS AG, St Gallen, Switzerland
9. SIGVARIS Management AG, Winterthur, Switzerland
10. Centre de Recherche Universitaire de La Léchère, Equipe THEMAS, Université Joseph Fourier, Grenoble, France