“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” (2019) SKIN The Journal of Cutaneous Medicine, 3(2), p. 170. doi:10.25251/skin.3.2.10.