1. Center for Experimental Surgery, Postgraduate Program in Surgical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
2. Department of Surgery, Division of Pediatric Surgery and Pediatric Urology, Federal Fluminense University and Servidores do Estado Hospital, Rio de Janeiro, Brazil
3. Division of Developmental and Stem Cell Biology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
4. Department of Pathology, Federal Fluminense University and Servidores do Estado Hospital, Rio de Janeiro, Brazil
5. Division of Pediatric Urology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada