title: Apparent contradiction between negative effects of UV radiation and positive effects of sun exposure.
authors.affiliation: Johann Wolfgang Goethe University, Institute of Sports Sciences, Frankfurt/Main, Germany. Hoffmann@em.uni-frankfurt.de
authors.forename: Gerd
authors.initials: G
authors.lastname: Hoffmann
authors.forename: Hans
authors.initials: H
authors.lastname: Meffert
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