1. Neonatal and Pediatric Intensive Care Unit, Graubuenden Cantonal Hospital, Chur, and College for Intensive Care, Emergency and Anesthesia Nursing, University Children's Hospital Zurich, Zurich, Switzerland
2. Child Development Center, University Children's Hospital Zurich, Zurich, Switzerland
3. Rehabilitation Center, University Children's Hospital Zurich, Zurich, Switzerland
4. Department of Pediatric Radiology, University Children's Hospital Zurich, Zurich, Switzerland
5. Department of Medical Statistics, Informatics and Health Economics, Medical University of Innsbruck, Innsbruck, Austria
6. Department of Neonatology, University Children's Hospital Zurich, Zurich, Switzerland