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Handling editor Ellen J Weber
Contributors The letter was conceived by CM with input from BG, TS, FL and ES. All authors read and approved the final manuscript.
Funding FL is supported by the NHS Trusts ’Trauma Audit and Research Network' (www.tarn.ac.uk). Research Trainees Coordinating Centre (CM is a National Institute for Health Research Clinical Lecturer in Emergency Medicine).
Competing interests None declared.
Provenance and peer review Commissioned; internally peer reviewed.