?:authorAffiliation
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[\'Division of Cardiology, Department of Pediatrics, Children\'s National Hospital, Washington, District of Columbia, USA.\', \'Maternal-Fetal Medicine Associates of Maryland, Rockville, Maryland, USA.\', \'Department of Obstetrics and Gynecology, The George Washington University School of Medicine, Washington, District of Columbia, USA.\', \'The Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.\', \'Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, The George Washington University, Washington, District of Columbia, USA.\', \'TLC Perinatal PA, Silver Spring, Germantown and Hagerstown, Maryland, USA.\', \'Greater Washington Maternal Fetal Medicine and Genetics, Washington, District of Columbia, USA.\']
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