title: 18p tetrasomy. Further evidence for a distinctive clinical syndrome.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics*; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D002902:Chromosomes, Human, 16-18; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008214:Lymphocytes / Q000166:cytology