Footnotes

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• Collaborators The SCOTS II Project group comprises: Vivienne Sayer, Mayur Kumar, Kath Lynch Princess Royal University Hospital, Orpington, Kent; Ben Warner, Olaolu Olabintan Darenth Valley Hospital, Dartford, Kent; Imogen Sutherland, Gabor Sipos Medway Maritime Hospital, Gillingham, Kent; Zacharias Tsiamoulos Queen Elizabeth QM Hospital, Margate, Kent; Shraddha Gulati, Mehul Patel King’s College Hospital, London; Ed Seward, Rawen Kader University College London Hospital, London; Sergio Coda, Sas Banerjee Barking and Havering NHS Trust, London; Adam Humphries, Sarah Marshall, Angad Dhillon, Romanov Nable St Mark’s Hospital, London.

• Contributors All named authors contributed to the initiation, analysis and writing of this article.

• 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 None declared.

• Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

• Provenance and peer review Not commissioned; internally peer reviewed.