Footnotes

• Twitter @drlauramac, @94naseem

• Correction notice This paper has been corrected since it was first published. In Table 1, column 3 it should read '2012' instead of '2021'.

• Collaborators PRAM Collaborators: Early project advice and support: Helen McDermott Local leads: Dr Hannah Vawda, Ms Sarah Kirk, Dr Moataz Badawy, Dr Pooja Siddhi. Local data collection and analysis: Megha Jagga, Oluwaseyi Alake, Canada Cherry, Benjamin Miguras, Raunak Jain, Nicola McMullan, Rawia Eltahir, Dr Sebastian Brown. Local data collection: Dr Mshail Mahmoud, Dr Vishanna Balbirsingh, Dr Catherine Lomax, Dr Emmeline Parfitt-Roche, Dr Andrew Pearce, Dr Lindsay Mulligan, Dr Afza Sadiq. Initial pilot work: Dr Sonia Goyal. Local Consultant Leads: Dr Kate Palmer, Dr Chandan Gupta, Dr Mohammed Buhary, Dr Michael Plunkett, Dr Paul Watson, Dr Robert Negrine, Dr Penny Broggio, Dr Raghu Krishnamurthy, Dr Cathryn Seagrave.

• Contributors This study is a collaboration lead by Paediatric Research Across the Midlands (PRAM), the West Midlands trainee-led regional research group. LM (1), SS (2), TvH (2), NM (2), AKE (2,3), PS (1), Paediatric Research Across the Midlands (PRAM) Network: (1) Birmingham Heartlands Hospital, (2) Birmingham Women’s and Children’s NHS Foundation Trust, (3) Institute of Metabolism and Systems Research, University of Birmingham. Supervision, project design, manuscript review: PS, AKE. Data analysis and manuscript: LM, SS, TvM, MN.

• 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.

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