Figure 6.

Comparison of maintenance therapy with cyclophosphamide (grey line) or azathioprine (black line) in ANCA-associated vasculitis. ANCA, anti-neutrophil cytoplasmic antibody. Reproduced with permission from Jayne et al. N Engl J Med 2003 © 2003 Massachusetts Medical Society [49].

Guillevin and Dörner Arthritis Research & Therapy 2007 9(Suppl 2):S9   doi:10.1186/ar2193