American Venous Forum
www.veinforum.org/
American College of Phlebology
www.phlebology.org/
Compression Therapy Group
www.terapiacompressiva.it/
German Society of Phlebology
www.phlebology.de/en/
International Compression Club
www.icc-compressionclub.com/
International Union of Phlebology (strong collaboration – no membership)
www.uip-phlebology.org/
North American Thrombosis Forum
www.natfonline.org/
Royal Society of Medicine
www.rsm.ac.uk/
Venous Association of India
www.vaicon2013.com/