Incidence of TB infection among Haifa schools; results of extensive tuberculin surveys during the years 1943-1947.
LICHTWITZ
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D003625:Data Collection; D006801:Humans; D015994:Incidence; D014373:Tuberculin; D014376:Tuberculosis / Q000453:epidemiology* / Q000706:statistics & numerical data*
D014373:Tuberculin