Article PubMed
Revista meÌ�dica de Chile  (1996)

[Natural history of human immunodeficiency virus infection in a cohort of Chilean patients].

Vial, P A; Ferreccio, C; Abarca, K; Ortiz, E; Noriega, M; Pérez, C; Labarca, J; Torres, M; Ferrés, M; González, C; Acuña, G