title: A cytogenetic study of 77 Chinese children with Down's syndrom.
mesh_terms: D000293:Adolescent; D044466:Asian People; D002648:Child; D002675:Child, Preschool; D003582:Cytogenetics; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D013624:Taiwan; D014314:Trisomy