A 9‐month, randomized, assessor‐blinded, parallel‐group study to evaluate clinical effects of film‐forming medical devices containing photolyase and sun filters in the treatment of field cancerization compared with sunscreen in patients after successful photodynamic therapy for actinic keratosis. (18th October 2016) - Eibenschutz, L.; Silipo, V.; De Simone, P.; Buccini, P.L.; Ferrari, A.; Carbone, A.; Catricalà, C.