Ekelund, Mats, Lotus Mallbris, Susanne Qvitzau, and Berndt Stenberg. 2013. “A Higher Score on the Dermatology Life Quality Index, Being on Systemic Treatment and Having a Diagnosis of Psoriatic Arthritis Is Associated With Increased Costs in Patients With Plaque Psoriasis”. Acta Dermato-Venereologica 93 (6):684-88. https://doi.org/10.2340/00015555-1591.