Augustin, M, J Wegtowska, M Lebwohl, C Paul, V Piguet, H Sofen, A Blauvelt, L Peterson, C Arendt, and R Rolleri. “Clinical Response in Plaque Psoriasis Patients Switching from Etanercept to Certolizumab Pegol in a Phase 3, Randomized, Controlled Study”. SKIN The Journal of Cutaneous Medicine 20 (December 17, 2018): S86. Accessed November 29, 2020.