Carvalho, L., A. Mateus, A. Marinho, C. Vasconcelos, and J. Correia. “Thalidomide in Severe and Resistant Orogenital Ulcers in Behçet Disease – a Group of Case Reports”. Internal Medicine, vol. 15, no. 3, Sept. 2008, pp. 169-71, https://revista.spmi.pt/index.php/rpmi/article/view/1471.