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Sheppard M, Spencer RN, Ashcroft R, David AL; EVERREST Consortium.Sheppard M, et al. Among authors: david al.Ultrasound Obstet Gynecol. 2016 Apr;47(4):484-91. doi: 10.1002/uog.15880. Epub 2016 Mar 9.Ultrasound Obstet Gynecol. 2016.PMID: 26968870Free article.Review.