Moura de Azevedo, S., D. I. Rocha, M. Vidigal Bertão, and Álvaro Ferreira. “Henoch-Schonlein Purpura in Advanced Age: Looking Beyond the Skin”. Internal Medicine, vol. 29, no. 1, Mar. 2022, pp. 33-36, doi:10.24950/rspmi.2022.01.236.