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Hemelaar J, Gouws E, Ghys PD, Osmanov S; WHO-UNAIDS Network for HIV Isolation and Characterisation.Hemelaar J, et al.AIDS. 2011 Mar 13;25(5):679-89. doi: 10.1097/QAD.0b013e328342ff93.AIDS. 2011.PMID: 21297424Free PMC article.