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Dunphy L, Taylor S, Whitby EH, Agarwal U, Alfirević Ž.Dunphy L, et al. Among authors: alfirevic z.BMJ Case Rep. 2022 May 6;15(5):e244237. doi: 10.1136/bcr-2021-244237.BMJ Case Rep. 2022.PMID: 35523517Free PMC article.
Williams A, Tincello DG, White S, Adams EJ, Alfirevic Z, Richmond DH.Williams A, et al. Among authors: alfirevic z.BJOG. 2005 Aug;112(8):1066-9. doi: 10.1111/j.1471-0528.2005.00652.x.BJOG. 2005.PMID: 16045519