About the Authors

Lindsay M. Edwards

L.M.Edwards@utas.edu.au

Current address: Menzies Research Institute, University of Tasmania, Hobart, Tasmania, Australia

Affiliations Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, Oxfordshire, United Kingdom, The Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital, Oxford, Oxfordshire, United Kingdom

Andrew J. Murray

Current address: Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, Cambridgeshire, United Kingdom

Affiliation Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, Oxfordshire, United Kingdom

Damian J. Tyler

Affiliations Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, Oxfordshire, United Kingdom, The Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital, Oxford, Oxfordshire, United Kingdom

Graham J. Kemp

Affiliation School of Clinical Sciences, University of Liverpool, Liverpool, Merseyside, United Kingdom

Cameron J. Holloway

Affiliation The Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital, Oxford, Oxfordshire, United Kingdom

Peter A. Robbins

Affiliation Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, Oxfordshire, United Kingdom

Stefan Neubauer

Affiliation The Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital, Oxford, Oxfordshire, United Kingdom

Denny Levett

Affiliation Centre for Altitude, Space, and Extreme Environment Medicine, University College London, London, United Kingdom

Hugh E. Montgomery

Affiliations Centre for Altitude, Space, and Extreme Environment Medicine, University College London, London, United Kingdom, Institute for Human Health and Performance, University College London, London, United Kingdom

Mike P. Grocott

Affiliation Centre for Altitude, Space, and Extreme Environment Medicine, University College London, London, United Kingdom

Kieran Clarke

Affiliation Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, Oxfordshire, United Kingdom

Caudwell Xtreme Everest Research Group

Competing Interests

This project was partly funded by grants from BOC Medical (now Linde Gas Therapeutics), Lilly Critical Care, The London Clinic, Smiths Medical, Deltex Medical and The Rolex Foundation. All monies were given as unrestricted grants: the funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. This does not alter the authors' adherence to any of the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LME AJM DT GJK CJH DL HEM MPWG KC. Performed the experiments: LME AJM CJH DL MPWG. Analyzed the data: LME GJK CJH KC. Wrote the paper: LME AJM DT GJK CJH PAR SN DL HEM MPWG KC.