GIL, F.; RATO, M.; MONTEIRO, A.; PARENTE, J.; MARTINS, C.; ARANHA, J.; SILVA, M. J. Why do we Discontinue Biologic Agents? A Retrospective Study of 11 Years. Journal of the Portuguese Society of Dermatology and Venereology, v. 78, n. 2, p. 123-128, 14 Jul. 2020.