1. Department of Paediatrics, General Hospital ‘Barmherzige Schwestern’, Ried im Innkreis, Austria,
2. Department of Paediatrics, Children’s und Maternity Hospital, Linz, Austria,
3. Center for Medical Statistics, Informatics and Intelligent Systems and
4. Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, Austria,
5. Department of Paediatrics, Medical University of Graz, Austria,
6. Department of Pediatrics, University Children’s Hospital, Medical University of Innsbruck, Austria,
7. Department of Paediatrics, LKH, Leoben, Austria,
8. Department of Paediatrics, Landesklinikum Mödling, Austria, and
9. Department of Paediatrics, Gottfied von Preyer’sches Kinderspital, Vienna, Austria