Sadoghi, Birgit, Birger Kränke, Lorenzo Cerroni, and Wolfgang Weger. “Unusual Cutaneous Reaction at Site of Methotrexate Injection in Two Patients With Psoriasis and Psoriatic Arthritis”. Acta Dermato-Venereologica 101, no. 11 (November 16, 2021): adv00593. Accessed September 15, 2024. https://medicaljournalssweden.se/actadv/article/view/352.