Egeberg, A., Skov, L., Zachariae, C., Gislason, G. H., Thyssen, J. P., & Mallbris, L. (2018). Duration of Psoriatic Skin Disease as Risk Factor for Subsequent Onset of Psoriatic Arthritis. Acta Dermato-Venereologica, 98(6), 546–550. https://doi.org/10.2340/00015555-2912