Heerfordt, Ida M., Peter A. Philipsen, Bettina Ø. Larsen, and Hans Christian Wulf. “Long-Term Trend in Sunscreen Use Among Beachgoers in Denmark”. Acta Dermato-Venereologica 97, no. 10 (August 31, 2017): 1202–1205. Accessed June 23, 2026. https://medicaljournalssweden.se/actadv/article/view/5003.