1 Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria.
2 Clinical Department for Farm Animals and Herd Management, University of Veterinary Medicine Vienna, Vienna, Austria.
3 Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria.
4 Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria. Electronic address: leopold.eckhart@meduniwien.ac.at.