“Efficacy and Safety of Apremilast in Patients With Moderate to Severe Plaque Psoriasis of the Scalp: Results of a Phase 3, Multicenter, Randomized, Placebo-Controlled, Double-Blind Study”. SKIN The Journal of Cutaneous Medicine, vol. 3, no. 2, Mar. 2019, p. 170, https://doi.org/10.25251/skin.3.2.10.