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Karrer, S.; Szeimies, R.-M.; Philipp-Dormston, W. G.; Gerber, P. A.; Prager, W.; Datz, E.; Zeman, F.; Müller, K.; Koller, M. Repetitive Daylight Photodynamic Therapy Versus Cryosurgery for Prevention of Actinic Keratoses in Photodamaged Facial Skin: A Prospective, Randomized Controlled Multicentre Two-Armed Study. Acta Derm Venereol 2021, 101, adv00355.