title: Commentary.
authors.affiliation: Division of Pediatric Cardiology, Washington University School of Medicine, St. Louis, MO. silva_j@kids.wustl.edu.
authors.forename: Jennifer N A
authors.initials: JN
authors.lastname: Silva
mesh_terms: D000906:Antibodies; D005333:Fetus; D006327:Heart Block / Q000151:congenital* / Q000175:diagnosis / Q000209:etiology; D054502:Histocompatibility, Maternal-Fetal; D006801:Humans
chemical_list: D000906:Antibodies