1. Prof. M. Metsä-Ketelä−Department of Life Technologies, University of Turku, Turku FIN−20014, Finland
2. Prof. em. G. Schneider−Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
3. Assoc. Prof R. Schnell−Department of Neuroscience, Karolinska Institutet, Stockholm SE-17177, Sweden
4. Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, Vienna A-1090, Austria