Mørk, Cato, Astrid Klopstad Wahl, and Torbjørn Moum. 2002. “The Norwegian Version of the Dermatology Life Quality Index: A Study of Validity and Reliability in Psoriatics”. Acta Dermato-Venereologica 82 (5):347-51. https://doi.org/10.1080/000155502320624078.