Özçelik, Sinan, and Fatma Arzu Kılıç. “COVID-19 Knowledge in Patients With Psoriasis Receiving Systemic Therapy: A Questionnaire Study”. Dermatology Practical & Conceptual 12, no. 4 (October 31, 2022): e2022166. Accessed April 18, 2026. https://www.dpcj.org/index.php/dpc/article/view/2142.