[WHO conference: VIII meeting of National Program Managers of the expanded program on immunization, Warsaw, Poland, November 11-13, 1998].
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007391:International Cooperation; D008297:Male; D011044:Poland; D014612:Vaccines / Q000627:therapeutic use*; D014777:Virus Diseases / Q000276:immunology* / Q000517:prevention & control*; D014944:World Health Organization