1. University Hospital of Pediatrics and Adolescent Medicine, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
2. University Children’s Hospital, 23562 Lübeck, Germany
3. Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany
4. Department of Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany
5. Department of Child and Adolescent Psychiatry, Saarland University Hospital, 66421 Homburg, Germany
6. School of Education and Psychology, Siegen University, 57076 Siegen, Germany
7. Medical Association, Westfalen-Lippe, 48151 Münster, Germany
8. Department of General Pediatrics and Neonatology, Saarland University Hospital, 66421 Homburg, Germany