Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, V-house, Sahlgrenska University Hospital Mölndal, 431 80, Mölndal, Sweden. bob.olsson@neuro.gu.se.
Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden. bob.olsson@neuro.gu.se.