title: Bacterial contamination rates for non-clean-catch and clean-catch midstream urine collections in boys.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002944:Circumcision, Male; D003114:Colony-Forming Units Assay; D004203:Disinfection; D006801:Humans; D008297:Male; D013048:Specimen Handling / Q000379:methods*; D013242:Sterilization; D014556:Urine / Q000382:microbiology*