∗St Mary's Academic Unit, Imperial College London, London W2 1NY, UK
†Imperial College London, London SW7 2AZ, UK
‡Magill Department of Anaesthesia, Intensive Care and Pain Management, Chelsea and Westminster Hospital, London SW10 9NH, UK
§Department of Upper GI and Bariatric Surgery, St George's University of London, London SW17 0RE, UK
¶Royal Brompton Hospital and National Heart and Lung Institute, Imperial College London, London SW3 6NP, UK.
[email protected].
O.M. and M.A. are first co-authors with equal contribution.
O. Moussa: Design, data analysis, and oversight in manuscript writing; M. Ardissino: Design, data interpretation, and manuscript writing; A. Tang: Manuscript writing and literature review; L. Lazzari: Manuscript writing and literature review; O. Millar: Manuscript writing, data interpretation, and literature review; A. Darzi: Data collection and access, senior oversight on study design and data usage; O. Khan: Senior oversight on data interpretation and manuscript writing, final correction and review of manuscript; P. Ziprin: Senior oversight on manuscript writing, final review of manuscript; P. Collins: Senior input on study design and methods, final review of manuscript; S. Purkayastha: Senior input on data analysis and manuscript writing.
Data access was provided by the Big Data & Analytical Unit (BDAU) at the Institute of Global Health Innovation (IGHI), Imperial College London. Infrastructure support for this research was provided by the NIHR Imperial Biomedical Research Centre (BRC). No funding was received for the study.
The authors report no conflicts of interest.
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