1. Neurocenter of Southern Switzerland; Civic Hospital; Lugano Switzerland
2. Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel; University of Basel; Basel Switzerland
3. Clinical Trial Unit, University Hospital Basel; University of Basel; Basel Switzerland
4. Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Sahlgrenska Academy; University of Gothenburg; Mölndal Sweden
5. Department of Molecular Neuroscience, Institute of Neurology; University College London; London United Kingdom