EXPRESSION OF CONCERN: Melatonin and Its Derivatives Counteract the Ultraviolet B Radiation‐Induced Damage in Human and Porcine Skin Ex Vivo

EXPRESSION OF CONCERN: C. Skobowiat, A. A. Brożyna, Z. Janjetovic, S. Jeayeng, A. S. W. Oak, T.-K. Kim, U. Panich, R. J. Reiter, A. T. Slominski, “Melatonin and its Derivatives Counteract the Ultraviolet B Radiation-Induced Damage in Human and Porcine Skin Ex Vivo,” Journal of Pineal Research 65, no. 2 (2018): e12501, https://doi.org/10.1111/jpi.12501. This Expression of Concern is for the above article, published online on 27 April 2018 in Wiley Online Library (wileyonlinelibrary.com), and has been issued by agreement between the journal Editor-in-Chief, Gianluca Tosini; and John Wiley & Sons Ltd. Concerns have been raised by a third party regarding multiple images included in this article. The University of Alabama at Birmingham is currently investigating these concerns. This Expression of Concern has been published in order to alert readers to these concerns while the investigation is ongoing. The publisher will publish a final notice regarding this investigation once a determination has been reached. The authors were informed of this Expression of Concern.