Gil, F., Rato, M., Silva, M.J. and Cardoso, J.C. 2018. Single Annular Plaque on the Forehead. Journal of the Portuguese Society of Dermatology and Venereology. 76, 2 (May 2018), 209-211. DOI:https://doi.org/10.29021/spdv.76.2.859.