P. van de Kerkhof, A. Pinter, M. Boehnlein, S. Kavanagh, and J. Crowley, “Efficacy of Certolizumab Pegol for Psoriasis of the Head and Neck in Two Phase 3 Clinical Trials: CIMPASI-1 and CIMPASI-2”, J of Skin, vol. 3, p. S40, Nov. 2019.