ACHUNGO, J.; NJUGUNA, P.; ETAU, P. Prevalence and Factors Associated with Psoriatic Arthritis among Psoriasis Patients on Follow-up at the Dermatology and Rheumatology Units, Kenyatta National Hospital, Kenya. East African Journal of Health and Science, v. 8, n. 2, p. 21-32, 26 jun. 2025.