1. Institute of Sport and Exercise Health; University College London Centre for Altitude Space and Extreme Environment (CASE) Medicine, UCLH NIHR Biomedical Research Centre; 170 Tottenham Court Road London UK
2. University College London Institute of Child Health; Critical Care Group, Portex Unit; London UK
3. University of Southampton; Integrative Physiology and Critical Illness Group, Clinical and Experimental Sciences; Southampton UK
4. Southampton NIHR Respiratory Biomedical Research Unit; Critical Care Research Area; Southampton UK
5. University Hospital Southampton NHS Foundation Trust; Anaesthesia and Critical Care Research Unit; Southampton UK
6. University College London and Royal Free Hospital; Perioperative & Critical Care Medicine; London UK NW3 2QG
7. University College London Hospitals; Institute of Sport and Exercise Health; First Floor, 170 Tottenham Court Road London UK W1T 7HA
8. Torbay Hospital, South Devon Healthcare NHS Foundation Trust; Department of Anaesthetics; Lawes Bridge Torquay Devon UK TQ2 7AA
9. Faculty of Medicine, University of Southampton; Critical Care Group, Clinical and Experimental Sciences; Tremona Road Southampton Hampshire UK SO16 6YD