Gamonal, S. B. L., A. C. C. Gamonal, M. A. F. Brandão, L. A. Junqueira, P. M. de Assis, and N. R. B. Raposo. “Prevalence of Psoriatic Arthritis Among Patients With Plaque Psoriasis: A Brazilian Retrospective Study”. São Paulo Medical Journal, vol. 139, no. 5, Sept. 2021, pp. 476-80, https://periodicosapm.emnuvens.com.br/spmj/article/view/525.