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Estimating duration of HIV infection with CD4 cell count and HIV-1 RNA at presentation

Girardi, Enricoa; Arici, Claudiob; Ferrara, Michelea; Ripamonti, Diegob; Aloisi, Maria Stellaa; Alessandrini, Annac; Scalzini, Alfredod; d'Arminio Monforte, Antonellae; Serraino, Diegoa; Ippolito, Giuseppea; for the ICONA Behavioural Epidemiology Study

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