1 Department of Neurology, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom.
2 Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.
3 Division of Neurology, Department of Internal Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.
4 Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.
5 Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom.