Sabine Nabecker1, Jessica Rogers2, Clare Morden3. 1. Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Inselspital, Freiburgstrasse, 3010 Bern, Switzerland. Electronic address: sabine.nabecker@insel.ch. 2. Department of Emergency Medicine, The Royal London Hospital, Whitechapel Road, London, E1 1FR, United Kingdom. Electronic address: jessicarogers@doctors.org.uk. 3. Department of Critical Care, Queen Alexandra Hospital, Southwick Hill Road, Portsmouth, PO6 3LY, United Kingdom. Electronic address: drcmorden@gmail.com.