1. Institute for Medical Biochemistry and Molecular Biology, University Medicine, Ernst-Moritz Arndt University, Greifswald, Germany.
2. Institute of Physiology, Pathophysiology and Biophysics, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria.
3. Department of Neurology, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany.
4. Institute of Laboratory Medicine, Molecular Diagnostics, Philipps University, Marburg, Germany.