title: Urinary calculi in Singapore--a study of 254 patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012846:Singapore; D014545:Urinary Calculi / Q000175:diagnosis* / Q000453:epidemiology