1 Department of Otorhinolaryngology Head and Neck Surgery Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
2 Division of Respiratory Medicine, Department of Paediatrics, Inselspital, University of Bern, 3010, Bern, Switzerland.
3 Department of Anaesthesiology and Pain Therapy, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
4 Department of Paediatrics, Section of Paediatric Critical Care, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
5 Department of Otorhinolaryngology Head and Neck Surgery, Hôspital Neuchâtelois, 2000, Neuchâtel, Switzerland.
6 Department of Otorhinolaryngology Head and Neck Surgery Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland. lluis.nisa@dbmr.unibe.ch.