title: Classification and nomenclature of malformation.
mesh_terms: D002869:Chromosome Aberrations / Q000145:classification*; D025063:Chromosome Disorders; D000013:Congenital Abnormalities / Q000145:classification* / Q000209:etiology; D004850:Eponyms; D006801:Humans; D013577:Syndrome; D009626:Terminology as Topic