CD4 and AIDS: 2 Phillips Phillips A A Lee Lee CA CA Elford Elford J J Janossy Janossy G G Bofill Bofill M M Timms Timms A A Kernoff Kernoff PB PB Prediction of progression to AIDS by analysis of CD4 lymphocyte counts in a haemophilic cohort Prediction of progression to AIDS by analysis of CD4 lymphocyte counts in a haemophilic cohort AIDS AIDS 1989 1989 3 3 11 11 737 737 41 41 2575912 2575912