?:authorAffiliation
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[\'Obstetrics and Gynecology, Division of Maternal Fetal Medicine, MedStar Washington Hospital Center, Washington, District of Columbia.\', \'Obstetrics and Gynecology, Division of Maternal Fetal Medicine, UPMC Magee-Womens Hospital, Pittsburgh, Pennsylvania.\', \'Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Eastern Virginia Medical School, Norfolk, Virginia.\']
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