T Karppinen, Toni, Lasse Ylianttila, Hannu Kautiainen, Timo Reunala, and Erna Snellman. “Empowering Heliotherapy Improves Clinical Outcome and Quality of Life of Psoriasis and Atopic Dermatitis Patients”. Acta Dermato-Venereologica 95, no. 5 (January 9, 2015): 579–582. Accessed April 28, 2026. https://medicaljournalssweden.se/actadv/article/view/5784.