title: Urolithiasis in children.
mesh_terms: D000293:Adolescent; D002031:Bulgaria; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D014545:Urinary Calculi / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology