Williams, R., Jenkins, D., Bolton, T., Heald, A., Mizani, M., Sperrin, M. & Peek, N. 2025, 'Replicating a COVID-19 study in a national England database to assess the generalisability of research with regional electronic health record data', BMJ Open, 15(4), article no: e093080. https://doi.org/10.1136/bmjopen-2024-093080