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Grotegut CA, Moore NL, Reddick KL, Canzoneri BJ, Boyd BK, Brown HL.Grotegut CA, et al. Among authors: boyd bk.Ultrasound Obstet Gynecol. 2010 Jul;36(1):112-4. doi: 10.1002/uog.7581.Ultrasound Obstet Gynecol. 2010.PMID: 20131330Free article.