Footnotes

• Twitter @DrJonLillie, @docmcdevelina, @finegoulden

• Contributors All authors contributed to the acquisition of DKA data for the South Thames Retrieval Service. All authors were involved in drafting or revising the letter and have given approval for this final submission.

• 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 consent for publication Not required.

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