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Lopes van Balen VA, van Gansewinkel TAG, de Haas S, van Kuijk SMJ, van Drongelen J, Ghossein-Doha C, Spaanderman MEA.Lopes van Balen VA, et al.Ultrasound Obstet Gynecol. 2017 Dec;50(6):697-708. doi: 10.1002/uog.17431.Ultrasound Obstet Gynecol. 2017.PMID: 28170124Free article.Review.