Gamonal, S.B.L., Gamonal, A.C.C., Brandão, M.A.F., Junqueira, L.A., Assis, P.M. de and Raposo, N.R.B. 2021. Prevalence of psoriatic arthritis among patients with plaque psoriasis: a Brazilian retrospective study. São Paulo Medical Journal. 139, 5 (Sep. 2021), 476–480.