Lindberg, Ingrid, Mathias Lilja, Kirk Geale, Haijun Tian, Craig Richardson, Amie Scott, and Amra Osmancevic. “Incidence of Psoriatic Arthritis in Patients With Skin Psoriasis and Associated Risk Factors: A Retrospective Population-Based Cohort Study in Swedish Routine Clinical Care”. Acta Dermato-Venereologica 100, no. 18 (November 18, 2020): 1–6. Accessed July 25, 2026. https://medicaljournalssweden.se/actadv/article/view/1835.