Photoprotection. Recommendations of the Polish Dermatological Society. Part 1: Ultraviolet radiation and sunscreens. - Narbutt, Joanna; Wolska, Hanna; Kaszuba, Andrzej; Langner, Andrzej; Lesiak, Aleksandra; Maj, Joanna; Placek, Waldemar; Reich, Adam; Rudnicka, Lidia; Zegarska, Barbara (Dermatology Review / Przeglad Dermatologiczny, 2018)