2019. Efficacy and Safety of Ingenol Mebutate in Patients With Actinic Keratosis on Face and Scalp: Subgroup Analysis of Two Vehicle-Controlled Trials According to Age (. SKIN The Journal of Cutaneous Medicine. 3, 2 (Mar. 2019), 168. DOI:https://doi.org/10.25251/skin.3.2.8.