Ghislain, P.-D., De Decker, I., & Lachapelle, J.-M. (2004). Efficacy and systemic absorption of topical tacrolimus used in pyoderma gangrenosum. British Journal of Dermatology, 150(5), 1052-1053. https://doi.org/10.1111/j.1365-2133.2004.05914.x (Original work published 2004)