Agerberg, Klas, and Anders Rönnblom. “Debut of Psoriasis Is Usually before Debut of Concomitant Inflammatory Bowel Disease: A Population-Based Retrospective Study”. Acta Dermato-Venereologica 102 (May 16, 2022): adv00714. Accessed April 19, 2024. https://medicaljournalssweden.se/actadv/article/view/2218.