Chimpanzee reservoirs of pandemic and nonpandemic HIV-1.

Order of authorship in the original paper: Keele, Van Heuverswyn, Li, Hahn. Definitive proof that SIVcpz circulated and existed in wild chimps in a given area of Africa, and that a mutation of this specific SIV in Africa ignited the epidemic/pandemic of HIV-AIDs.

Digital text from PubMedCentral at this link.

(Thanks to Juan Weiss for this entry and its interpretation.)