Kim, H., Hansen, J., Faurby, M. and al., et 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 (<65 and ≥65 Years). SKIN The Journal of Cutaneous Medicine. 3, 2 (Mar. 2019), 168. DOI:https://doi.org/10.25251/skin.3.2.8.