Kuijpers, A., Bergers, M., Siegenthaler, G., Zeeuwen, P., van de Kerkhof, P., & Schalkwijk, J. (1997). Skin-derived antileukoproteinase (SKALP) and epidermal fatty acid-binding protein (E-FABP): two novel markers of the psoriatic phenotype that respond differentially to topical steroid. Acta Dermato-Venereologica, 77(1), 14–19. https://doi.org/10.2340/0001555577014019