Copyright information:Taken from "PCR colorimetric dot-blot assay and clinical pretest probability for diagnosis of Pulmonary Tuberculosis in Smear-Negative patients"http://www.biomedcentral.com/1471-2458/7/356BMC Public Health 2007;7():356-356.Published online 20 Dec 2007PMCID:PMC2241618.rom 5% to 48.8%