1. Nephrology Unit, Uppsala University Children's Hospital, Uppsala, Sweden
2. Klinik für Allgemeine Pädiatrie der Christian-Albrechts-Universität, Kiel, Germany
3. Nottingham University Hospitals National Health Service Trust Queens Medical Centre Campus, Nottingham, United Kingdom
4. Pediatric Urology Section, Federal University of São Paulo, São Paulo, Brazil
5. Department of Pediatrics, Aarhus University Hospital, Skejby, Aarhus, Denmark
6. Section of Paediatric Urology, Department of Urology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
7. Pediatric Nephrology Unit, Ghent University Hospital, Ghent, Belgium
8. Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
9. Calgary, Alberta, Canada