Neves, José, A. Brasileiro, and P. Mendes-Bastos. 2021. “Recalcitrant Palmoplantar Pustulosis: Have You Considered Allergic Contact Dermatitis?”. Journal of the Portuguese Society of Dermatology and Venereology 79 (2), 173-74. https://doi.org/10.29021/spdv.79.2.1313.