1 Division of Neonatology, Department of Paediatrics, Inselspital Universitätsspital Bern, University of Bern, Bern, Switzerland.
2 Division of Paediatric Respiratory Medicine and Allergology, Department of Paediatrics, University of Bern, Inselspital Universitätsspital Bern, Bern, Switzerland.
3 Department of Human Genetics, University of Bern, Inselspital Universitätsspital Bern, Bern, Switzerland.
4 Department of Diagnostic, Interventional and Paediatric Radiology, University of Bern, Inselspital Universitätsspital Bern, Bern, Switzerland.
5 Department of Obstetrics and Gynecology, University of Bern, Inselspital Universitätsspital Bern, Bern, Switzerland.
6 Division of Respiratory Medicine, UKBB, Basel, Switzerland.
7 Division of Respiratory Medicine, Universitäts-Kinderspital Zürich, Zürich, Switzerland.