title: Trisomy 18 (29 cases) and trisomy 13 (19 cases): a summary.
mesh_terms: D000015:Abnormalities, Multiple / Q000145:classification / Q000235:genetics*; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D003878:Dermatoglyphics; D006801:Humans; D010641:Phenotype; D012189:Retrospective Studies; D014314:Trisomy