Kaymaz, S., Karasu, U., Kaçar, N., Çınar, G., Çobankara, V., Alkan, H. & Ulutaş, F. (2020). Validation of the Simple Psoriatic Arthritis Screening (SiPAS) questionnaire in a Turkish psoriatic population. International Journal of Rheumatic Diseases, 23(9), 1159-1164. https://doi.org/10.1111/1756-185X.13911