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Sandberg, C.; Stenquist, B.; Rosdahl, I.; Ros, A.; Synnerstad, I.; Karlsson, M.; Gudmundson, F.; Ericson, M.; Wennberg, A. Important Factors for Pain During Photodynamic Therapy for Actinic Keratosis. Acta Derm Venereol 2006, 86, 404-408.