| Affiliation: | 1. Department of Clinical Research, University Hospital of Bern, Bern, Switzerland;2. Division of Pediatric Respiratory Medicine, University Children's Hospital, Bern, Switzerland;3. Graduate School for Cellular and Biomedical Sciences, University Hospital of Bern, Bern, Switzerland;4. Division of Respiratory Medicine, University Children's Hospital, Zürich, Switzerland;5. Division of Respiratory Medicine, University Hospital of Bern, Bern, Switzerland;6. Children's Hospital Lucerne, Lucerne, Switzerland |
