?:authorAffiliation
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[\'Maternal-Fetal Medicine Unit, Clínica Dávila, Santiago, Chile.\', \'Maternal-Fetal Medicine Unit, Division of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.\', \'Department of Obstetrics & Gynecology and Laboratory of Reproductive Biology, Faculty of Medicine, Universidad de los Andes, Santiago, Chile.\', \'Department of Epidemiology & Public Health, Faculty of Medicine, Universidad de los Andes, Santiago, Chile.\']
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