Citation:
Wolbers M, Babiker A, Sabin C, Young J, Dorrucci M, Chene G, Mussini C, Porter K, Bucher HC, Collaboration C, et al. Pretreatment CD4 cell slope and progression to AIDS or death in HIV-infected patients initiating antiretroviral therapy—the CASCADE collaboration: a collaboration of 23 cohort studies. PLoS medicine. 2010;7:e1000239.