Death rates in HIV-positive antiretroviral-naive patients with CD4 count greater than 350 cells per microL in Europe and North America: a pooled cohort observational study. - Lodwick, Rebecca K; Sabin, Caroline A; Porter, Kholoud; Ledergerber, Bruno; van Sighem, Ard; Cozzi-Lepri, Alessandro; Khaykin, Pavel; Mocroft, Amanda; Jacobson, Lisa; De Wit, Stephane; others (Lancet (London, England), 2010)