De Gennaro M1, Di Ciommo V2, Capitanucci M L3, Mosiello G1, Orazi C 4, Schingo P5, Adorisio O6, Tubaro A7 1. Bambino Gesu' Children's Hospital, Dept Nephro-Urology, Urodynamic Unit , 2. Bambino Gesu' Children Hospital, Epidemiology and Statistics Unit, 3. Bambino Gesu' Children's Hospital, Dept of Nephro-Urology, 4. Bambino Gesu' Children's Hospital, Deptof Radiology, 5. Bambino Gesu' Children's Hospital, Dept of Radiology, 6. Mayer Children's Hospital, Pediatric Surgery Unit, 7. Urology Dept "La Sapienza" University of Rome

Macaulay M1, Pettersson L1, Fader M1, Brooks R1, Cottenden A1 1. University College London

Kracochansky M1, Koch V1, Schneider E 1, Arap S1, Trigo Rocha F1 1. University of Sao Paulo

Kajiwara M1, Inoue K2, Kato M1, Kurihara M1, Usui A3, Usui T1 1. Hiroshima University, 2. Miyazaki University, 3. Hiroshima Prefecture Rehabilitation center

Kim K M1, Lee S W1 1. Seoul National University

Tanaka H 1, Kakizaki H1, Moriya K1, Furuno T1, Nonomura K1 1. Department of Urology, Hokkaidou University Graduate School of Medicine

Marschall-Kehrel A1, Mürtz G 2, Kramer G3, Jünemann K P4, Hjalmas K5 1. Urology Consultancy, Berursel, 2. APOGEPHA Arzneimittel GmbH, Dresden Germany, 3. Bennebroek, the Netherlands, 4. Department of Urology and Paediatric Urology, University of Kiel Germany, 5. Paediatric Urology Göteborg University, Sweden

Vermandel A1, Wyndaele J1 1. University Antwerpen

De Gennaro M1, Buffa P 2, Capitanucci M L3, Battaglino G F4, Beseghi U 5, Di Lorenzo F 6 1. Bambino Gesu' Children's Hospital, Departement of Nephro-Urology, Urodynamic Unit , 2. G.Gaslini Children's Hospital, Pediatric Surgery Unit, 3. Bambino Gesu' Children's Hospital, Dept of Nephro-Urology, 4. Ospedale Civile di Vicenza, Pediatric Surgery Unit, 5. Ospedale Generale di Parma, Pediatric Surgery Unit, 6. University of F Bologna, Pediatric Surgery Unit