title: Cytogenetic studies of 227 cases of Down syndrome in Thailand.
mesh_terms: D000293:Adolescent; D000328:Adult; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D008875:Middle Aged; D013785:Thailand; D014178:Translocation, Genetic; D014314:Trisomy