Immunisation AIDS.
van Niekerk
J P
JP
D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D007391:International Cooperation; D009938:Organizations / Q000458:organization & administration*; D011051:Poliomyelitis / Q000517:prevention & control*; D012899:Smallpox / Q000517:prevention & control*; D014611:Vaccination / Q000592:standards*; D014944:World Health Organization