title: Screening tests and specificity.
authors.forename: Maher M
authors.initials: MM
authors.lastname: El-Masri
mesh_terms: D003110:Colonic Neoplasms / Q000175:diagnosis*; D006801:Humans; D008403:Mass Screening / Q000592:standards*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity