title: Interpreting tuberculin skin tests.
authors.forename: R K
authors.initials: RK
authors.lastname: Elwood
mesh_terms: D002170:Canada; D002648:Child; D002675:Child, Preschool; D006801:Humans; D012680:Sensitivity and Specificity; D012882:Skin Tests / Q000379:methods*; D014376:Tuberculosis / Q000517:prevention & control*