Prado G, Teplitz R, Winkelmann R, Del Rosso J, Rigel D. Clinical Efficacy & Safety of Oral Polypodium Leucotomos Extract for Photoprotection: A Systematic Review. J of Skin [Internet]. 2018Nov.9 [cited 2024Sep.19];2(6). Available from: https://dermsquared.com/skin/article/view/413