1. Department of Medical Microbiology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
2. Nijmegen University Centre for Infectious Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
3. Department of Paediatric Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
4. University Children's Hospital Innsbruck, Innsbruck, Austria
5. Laboratory of Paediatrics and Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
6. Children's Hospital Salzburg, Salzburg, Austria