1. Low doses of zidovudine plus didanosine are less effective than higher doses of didanosine monotherapy: a randomized trial in patients pretreated with zidovudine 
Philippe Sudre, Jean Philippe Chave, Christian Ruef, Anne Iten, Heiner C. Bucher, Pietro L. Vernazza, Hansjakob Furrer, Enos Bernasconi, Norberto Ceserani, Manuel Battegay, Jan Von Overbeck, Ignazio Cassis, Adriano Lazzarin, Victor Gabriel, Bernard J. Hirschel 
Clinical Microbiology and Infection 
Volume 3, Issue 6, Pages (December 1997)
DOI: /j tb00469.x
Copyright © 1997 European Society of Clinical Infectious Diseases Terms and Conditions

2. Figure 1
Incidence of AIDS defining clinical events and death (Cox proportional hazard model).
Clinical Microbiology and Infection 1997 3, DOI: ( /j tb00469.x)
Copyright © 1997 European Society of Clinical Infectious Diseases Terms and Conditions