1. Department of Physiology; Institute of Neuroscience and Physiology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
2. Clinical Neurochemistry Lab; Institute of Neuroscience and Physiology; Sahlgrenska Academy; University of Gothenburg; Mölndal Sweden
3. UCL Institute of Neurology; London UK
4. Department of Anesthesiology; Sahlgrenska University Hospital; Gothenburg Sweden