1. International Union of Phlebology (UIP)
2. Australasian College of Phlebology (ACP)
3. American Venous Forum (AVF)
4. American Vein and Lymphatic Society (AVLS)
5. Imperial College London, Charing Cross and St Mary’s Hospital, London, UK
6. Department of Dermatology, Erasmus MC, Rotterdam, the Netherlands
7. Division of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, MN, USA
8. Pan-American Society of Phlebology and Lymphology
9. European Venous Forum (EVF)
10. Interventional Radiology Society of Australasia (IRSA)
11. Latin American Venous Forum (LAVF)
12. Venous Association of India (VAI)
13. European College of Phlebology (ECoP)