1. Public Health Scotland. Births in Scottish hospitals - year ending 31 March 2020. Edinburgh: National Statistics.
2. NHS Digital. NHS maternity statistics, England 2019-20. London: Health and Social Care Information Centre.
3. Norman J, Stock S. Intracervical Foley catheter for induction of labour. Lancet. 2011;378(9809):2054–5. https://doi.org/10.1016/S0140-6736(11)61581-X.
4. National Institute for Clinical Excellence (NICE). NICE guideline CG70 - induction of labour. London: RCOG Press; 2008.
5. Vogel JP, Osoti AO, Kelly AJ, Livio S, Norman JE, Alfirevic Z, et al. Cochrane Database Syst Rev. 2017;(9):CD007701.