IDENTIFICATION OF HIGH TUBERCULOSIS-RISK GROUPS, IN CONNECTION WITH THE 'EPIDEMIOLOGICAL AND CLINICAL STUDY OF TUBERCULOSIS IN CZECHOSLOVAKIA IN COLLABORATION WITH WHO'.
D035843:Biomedical Research; D003299:Cooperative Behavior; D003604:Czechoslovakia; D004813:Epidemiology; D006801:Humans; D014376:Tuberculosis
CZECHOSLOVAKIA; EPIDEMIOLOGY; TUBERCULOSIS