About the Authors
Royal Hampshire County Hospital, Winchester, United Kingdom
Department of Neurological Science, School of Medicine, University of Liverpool, United Kingdom
Bristol Royal Infirmary and University of Bristol, United Kingdom
Royal Marsden NHS Trust, London, United Kingdom
Department of Anaesthetics, Intensive Care and Pain Medicine, Imperial College London, United Kingdom
KH and ASCR designed the study. KH, TJN, RWJ, RPA, and ASCR analyzed the data. KH, TJN, RWJ, RPA, and ASCR contributed to writing the paper.