1. Carlisle, J. B. Anaesthesia 76, 472–479 (2021).
2. Roberts, I., Smith, R. & Evans, S. BMJ 334, 392 (2007).
3. Avenell, A., Bolland, M. J., Gamble, G. D. & Grey, A. Account. Res. https://doi.org/10.1080/08989621.2022.2082290 (2022).
4. Popp, M. et al. Cochrane Database Syst. Rev. 6, CD015017 (2022).
5. Ker, K., Shakur, H. & Roberts, I. BJOG 123, 1745–1752 (2016).