The nutritional status of asymptomatic HIV-infected Africans: directions for dietary intervention? - Vorster HH; Kruger A; Margetts BM; Venter CS; Kruger HS; Veldman FJ; MacIntyre UE; Vorster, Hester H; Kruger, Annamarie; Margetts, Barrie M; Venter, Christina S; Kruger, H Salomé; et al. (Public Health Nutrition, 2004)