T. E. Robsahm, J. S. Stenehjem, L. A. Berge, and M. B. Veierød, “Prevalence of Indoor Tanning Among Teenagers in Norway Before and After Enforcement of Ban for Ages Under 18 Years”, Acta Derm Venereol, vol. 100, no. 8, pp. 1–2, Apr. 2020.