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Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests RW is the previous national clinical director for Emergency Preparedness, Resilience and Response with NHS England, a former president of the Intensive Care Society, a board member of the Faculty of Intensive Care Medicine and currently major trauma consultant at QMC Nottingham.
Patient consent for publication Not required.
Provenance and peer review Commissioned; internally peer reviewed.
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