1. Department of Pediatric Surgery, Emma Children’s Hospital Amsterdam UMC, Location University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
2. Amsterdam Gastroenterology and Metabolism Research Institute, 1105 AZ Amsterdam, The Netherlands
3. Amsterdam Reproduction and Development Research Institute, 1105 AZ Amsterdam, The Netherlands
4. Department of Pediatric Urology, Emma Children’s Hospital Amsterdam UMC, Location University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
5. Vereniging Anusatresie, 1273 ST Huizen, The Netherlands