title: Stability of tuberculin tests.
authors: P
authors: P
authors: de March-Ayuela
mesh_terms: D000328:Adult; D000368:Aged; D004355:Drug Stability; D006801:Humans; D013030:Spain / Q000453:epidemiology; D014374:Tuberculin Test / Q000592:standards*; D014376:Tuberculosis / Q000175:diagnosis* / Q000453:epidemiology; D014481:United States / Q000453:epidemiology