Evaluation of the World Health Organization staging system for HIV infection and disease in Ethiopia: association between clinical stages and laboratory markers

Kassa E, Rinke de Wit TF, Hailu E, Girma M, Messele T, Mariam HG, Yohannes S, Jurriaans S, Yeneneh H, Coutinho RA, Fontanet AL. Evaluation of the World Health Organization staging system for HIV infection and disease in Ethiopia: association between clinical stages and laboratory markers. AIDS. 1999; 13(3): 381-9.