M. R. C. Silvares, K. I. R. Coelho, I. Dalben, J. C. Lastória, and L. P. F. Abbade, “Sociodemographic and clinical characteristics, causal factors and evolution of a group of patients with chronic urticaria-angioedema”, Sao Paulo Med J, vol. 125, no. 5, pp. 281–285, Sep. 2007.