Amara, S., A. . Patel, and M. . Lebwohl. “Safety and Efficacy of Combination Therapy of Upadacitinib and Biologic Agents for Treatment-Resistant Psoriasis and Psoriatic Arthritis”. SKIN The Journal of Cutaneous Medicine, vol. 8, no. 3, May 2024, pp. 1574-80, doi:10.25251/skin.8.3.17.