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}}</ref><refname="Saez-Llorens 1989">{{REFjournal |last=Saez-Llorens |init=X |last2=Umana |first2=Maria A. et al |ini2=MA |last3=Odio |first3=Carla M. [ |init3=CM |init4=Lohr |first4=Jacob A. |init4=JA |url=http://www.cirp.org/library/disease/UTI/llorens/ |title=Bacterial contamination rates for non-clean-catch and clean-catch midstream urine collections in uncircumcised boys]. From the |publisher=Department of Pediatrics. Hospital Nacional de Ninos, San Jose, Costa Rica, and the Department of Pediatrics, the Children's Medical Center of the {{UNI|University of Virginia|UVA}}, Charlottesville , {{USSC|VA.}} |journal=J Pediatr |date=1989 |volume=114 |issue=1 |pages=93-5}}</ref> McCracken recommends investigation with radiographic and/or sonography.<ref name="ginsburg uti"/>

}}</ref> There is a significant false-positive rate in diagnosing UTI when urine cultures alone are used.<ref name="Mueller 1997"/><ref>name="Saez-Llorens X. et al. [http:1989"//www.cirp.org/library/disease/UTI/llorens/ Bacterial contamination rates for non-clean-catch and clean-catch midstream urine collections in uncircumcised boys]. From the Department of Pediatrics. Hospital Nacional de Ninos, San Jose, Costa Rica, and the Department of Pediatrics, the Children's Medical Center of the University of Virginia, Charlottesville VA.</ref> This criticism was addressed to some extent in Wiswell's second review.<ref name="Wiswell 1986"/>