Drenkard C, Villa AR, Reyes E, et al : Vasculitis in systemic lupus erythematosus. Lupus, 6 : 235-242, 1997.
Ramos-Casals M, Nardi N, Lagrutta M, et al: Vasculitis in systemic lupus erythematosus : prevalence and clinical characteristics in 670 patients. Medicine(Baltimore), 85 : 95-104, 2006.