?:authorAffiliation
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[\'Department of Obstetrics, Gynecology and Reproductive Science, Division of Maternal Fetal Medicine, Columbia University Irving Medical Center, New York, NY USA. Electronic address: mjm2246@cumc.columbia.edu.\', \'Department of Obstetrics, Gynecology and Reproductive Science, Division of Maternal Fetal Medicine, Columbia University Irving Medical Center, New York, NY USA.\']
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