[1] IRCCS Multimed, Dept Vasc Surg, Milan, Italy
[2] Ealing Gen Hosp, Josef Pflug Vasc Lab, Southall, Middx, England
[3] Imperial Coll, London, England
[4] West London Vasc & Intervent Ctr, London, England
[5] Microlab Elettron, Padua, Italy
[6] Sapienza Univ, Dept Anat, Rome, Italy
[7] Ist Flebol Italiano, Ferrara, Italy
[8] Abanomed, Padua, Italy