Affiliations

• ¹ Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
• ² Paediatric Respiratory Medicine, Children's University Hospital of Bern, University of Bern, Bern, Switzerland.
• ³ Paediatric Dept of Allergy and Lung Diseases, Oslo University Hospital, Oslo, Norway.
• ⁴ Division of Pediatric Pulmonology, Allergology, and Endocrinology, Dept of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.
• ⁵ School of Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Southampton, UK.
• ⁶ Respiratory Physiology Laboratory, Medical School, University of Cyprus, Nicosia, Cyprus.
• ⁷ Dept of General Pediatrics, University Hospital Münster, Münster, Germany.
• ⁸ Primary Ciliary Dyskinesia Centre, NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
• ⁹ Dept of Pediatric Pulmonology, Immunology and Critical Care Medicine, Charité-Universitätsmedizin, Berlin, Germany.