1. Department of General Pediatrics, Pediatric Pulmonology, University Hospital Muenster, Muenster, Germany;
2. Institute of Medical Informatics, University of Muenster, Muenster, Germany;
3. Institute of Medical Informatics, Heidelberg University Hospital, Heidelberg, Germany; and
4. Department of General Pediatrics, Pediatric Pulmonology, Helios Kliniken Schwerin, Schwerin, Germany