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Renfrew MJ, Bradshaw G, Burnett A, Byrom A, Entwistle F, King K, Olayiwola W, Thomas G.Renfrew MJ, et al. Among authors: entwistle f.Midwifery. 2021 Mar;94:102915. doi: 10.1016/j.midw.2020.102915. Epub 2020 Dec 26.Midwifery. 2021.PMID: 33450714Free PMC article.