1. Department
of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden
2. Clinical
Neurochemistry Laboratory, Institute of Neuroscience and Physiology,
Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
3. UCL Institute of Neurology, Queen Square, London WC1N
3BG, United Kingdom
4. Boreskov
Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, Russia