Dayan, S., S. G. Yoelin, K. De Boulle, and I. L. Ferrusi. “The Psychological Impacts of Horizontal Frontalis Lines, Glabellar Lines, and Lateral Canthal Lines: Qualitative, Patient-Centered Studies”. SKIN The Journal of Cutaneous Medicine, vol. 1, no. 3.1, Oct. 2017, p. s86, doi:10.25251/skin.1.supp.85.