1. Institute of Psychiatry, King's Health Partners Centre for Neurodegeneration Research, King's College London, London, UK
2. NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Foundation Trust and Institute of Psychiatry, King's College London, London, UK
3. Department of Neurology, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
4. Medical University of Lodz, Lodz, Poland
5. Institute of Gerontology and Geriatrics, University of Perugia, Perugia, Italy
6. 3rd Department of Neurology, “G. Papanicolaou” Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
7. INSERM U 558, University of Toulouse, Toulouse, France
8. Department of Neurology, Programme in Neurogenetics, David Geffen School of Medicine, University of California at Los Angeles, CA, USA