title: Periodontal disease and serum citric acid levels in trisomy-21. A further study.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002951:Citrates / Q000097:blood*; D004314:Down Syndrome / Q000097:blood*; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000097:blood; D008297:Male; D010510:Periodontal Diseases / Q000097:blood*; D010512:Periodontal Index; D013223:Statistics as Topic
chemical_list: D002951:Citrates