title: Letter: Trisomy 18: a new clinical sign.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002902:Chromosomes, Human, 16-18; D003680:Deglutition Disorders / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D013577:Syndrome; D014060:Tongue Diseases / Q000235:genetics*; D014314:Trisomy