An investigation into specific and non-specific tuberculin sensitivity in school children in eighteen countries.
D000293:Adolescent; D000462:Algeria; D001500:BCG Vaccine; D001530:Belgium; D002170:Canada; D002648:Child; D003604:Czechoslovakia; D004293:Dominican Republic; D005260:Female; D005602:France; D005681:Gabon; D006801:Humans; D007557:Israel; D007558:Italy; D007988:Liberia; D008297:Male; D009426:Netherlands; D011044:Poland; D011174:Portugal; D013019:South Africa; D013030:Spain; D013532:Suriname; D014374:Tuberculin Test; D006113:United Kingdom; D015022:Yugoslavia
D001500:BCG Vaccine