1. Department of Pediatric Urology and Surgery, Children's University Hospital of Rennes, CHU de Rennes, Rennes, France.
2. Department of Pediatric Urology and Surgery, Children's University Hospital of Nantes, CHU de Nantes, Nantes, France.
3. Department of Pediatrics, Division of Pediatric Infectious Diseases, Children's University Hospital of Nantes, CHU de Nantes, Nantes, France.