1. The risk of tuberculous infection in the Netherlands, 1967–1979;Sutherland;Tubercle,1983
2. Epidemiological and clinical study of tuberculosis in the district of Kolín, Czechoslovakia;Stýblo;Bulletin of the World Health Organisation,1967
3. Tuberculin sensitivity eight to fifteen years after BCG vaccination;Comstock;American Review of Respiratory Disease,1971
4. BCG and vole bacillus vaccines in the prevention of tuberculosis in adolescence and early adult life;Medical Research Council;Bulletin of the World Health Organisation,1972
5. The risk of tuberculous infection in Uganda, derived from the findings of national tuberculin surveys in 1958 and 1970;Stott;Tubercle,1973