1 Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, S-431 80 Mölndal, Sweden ; UCL Institute of Neurology, Queen Square, London, WC1N 3BG, UK.
2 Quanterix Corporation, 113 Hartwell Avenue, Lexington, MA 02421, USA.
3 Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, S-431 80 Mölndal, Sweden.
4 Clinical Memory Research Unit, Clinical Sciences Malmö, Lund University, Simrisbanvägen 14, S-212 24 Malmö, Sweden.