title: Multiple actinic keratoses induced by occupational UV exposure in a patient with preexisting disseminated superficial actinic porokeratosis (Chernosky-Freeman).
authors.affiliation: Department of Dermatology, University Hospital, Jena, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Kalampalikis
authors.affiliation: Department of Dermatology, University Hospital, Jena, Germany.
authors.forename: Sibylle
authors.initials: S
authors.lastname: Schliemann
authors.affiliation: Department of Dermatology, University Hospital, Jena, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Elsner