[1] Royal Surrey Hosp, Dept Urol, Guildford, Surrey, England
[2] Policlin Tor Vergata PTV Univ, Dept Surg Sci, Breast Unit, Rome, Italy
[3] Charite Univ Med Berlin, Dept Urol, Berlin, Germany
[4] Hosp Gen Univ Valencia, Dept Paediat Obstet & Gynecol, Valencia, Spain
[5] Hosp Santa Creu & Sant Pau, Barcelona, Spain
[6] Univ Milan, Fdn IRCCS Osped Maggiore Policlin, Milan, Italy
[7] Reg Univ Hosp, Dept Thorac Surg, Nancy, France
[8] Triduc Partners Ltd, Tunbridge Wells, England
[9] S Eugenio Hosp, Dept Gen Surg, Piazzale Umanesimo 10, I-00144 Rome, Italy