Mustapha N, Barra L, Carette S, Cuthbertson D, Khalidi NA, Koening CL, Langford CA, McAlear CA, Milman N, Moreland LW, Monach PA, Seo P, Specks U, Sreih AG, Ytterberg SY, Merkel PA, Pagnoux C. Efficacy of leflunomide in the treatment of vasculitis. Clin Exp Rheumatol. 2021 Mar-Apr; 39 Suppl 129(2):114-118.