1 Institute of Molecular Biosciences, University of Graz, Graz, Austria.
2 Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden.
3 Research Division for Neurodegenerative Diseases, Center for Biosciences, Department of Medicine, Faculty of Medicine and Dentistry, Danube Private University, Krems an der Donau, Austria.
4 Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden.