Roberto Brambilla1, Daniele Aloisi2, Iris Weingard3, Marco Fioruzzi4, Thomas Heisterkamp5, Edith Janthur6, Peter Kurz7, Katrin Will8 1 Instituti Clinici Zucchi (Monza, Italy) 2 Poliambulatotio Mengoli (Bologna, Italy) 3 Venenzentrum Freiburg (Freiburg, Germany) 4 Policlinico San Marco (Zingonia, Italy) 5 Dermatologische-Phlebologische Praxis GESCHER, (Gescher, Germany) 6 Venenzentrum SAARLOUIS,(Saarlouis, Germany) 7 Wund Pflege Management GmbH (Bad Pirawarth, Austria) 8 BSN medical GmbH (Germany)