Blauvelt, A., C. Paul, P. van de Kerkhof, R. Warren, A. Gottlieb, R. Langley, F. Brock, C. Arendt, M. Boehnlein, M. Lebwohl, and K. Reich. “Long-Term Safety of Certolizumab Pegol in Plaque Psoriasis: Pooled Analysis over 3 Years from Three Phase 3, Randomized, Placebo-Controlled Studies”. SKIN The Journal of Cutaneous Medicine, vol. 4, no. 1, Jan. 2020, p. S5, https://jofskin.org/33014/index.php/skin/article/view/809.