title: Urethral calculi: a paediatric problem of urinary lithiasis.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D014522:Urethral Diseases / Q000601:surgery*; D014545:Urinary Calculi / Q000601:surgery*