Institute of Medical Science, University of Toronto, Medical Sciences Building, 1 King’s College Cir Suite 2374, Toronto, ON, M5S 1A8, Canada

Vishaal Sumra & Maria Carmela Tartaglia

Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Medical Sciences Building, 1 King’s College Cir Suite 2374, Toronto, ON, M5S 1A8, Canada

Vishaal Sumra, Anthony E. Lang, Ekaterina Rogaeva, Miracle Ozzoude & Maria Carmela Tartaglia

Krembil Brain Institute, 135 Nassau St, Toronto, ON, M5T 1M8, Canada

Mohsen Hadian, Anthony E. Lang & Maria Carmela Tartaglia

University Health Network, 190 Elizabeth St, Toronto, ON, M5G 2C4, Canada

Mohsen Hadian, Connie Marras & David F. Tang-Wai

Montreal Neurological Institute and Hospital, 3801 Rue University, Montréal, QC, H3A 2B4, Canada

Allison A. Dilliott & Sali M. K. Farhan

Department of Neurology and Neurosurgery, McGill University, 3801 Rue University, Montréal, QC, H3A 2B4, Canada

Allison A. Dilliott & Sali M. K. Farhan

University of Ottawa, 75 Laurier Ave E, Ottawa, ON, K1N 6N5, Canada

Andrew R. Frank & Dar Dowlatshahi

Bruyere Research Institute, 85 Primrose Ave, Ottawa, ON, K1R 6M1, Canada

Andrew R. Frank

Movement Disorder Clinic, Toronto Western Hospital, University Health Network, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada

Anthony E. Lang & Connie Marras

Faculty of Medicine, University of Toronto, 27 King’s College Cir, Toronto, ON, M5S 1A1, Canada

Anthony E. Lang, Lorne Zinman & Maria Carmela Tartaglia

Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada

Angela C. Roberts & Michael Borrie

Canadian Centre for Activity and Aging, Western University, 1201 Western Rd, London, ON, N6G 1H1, Canada

Angela C. Roberts

Baycrest Health Sciences Centre, 3560 Bathurst St, Toronto, ON, M6A 2E1, Canada

Angela Troyer & Morris Freedman

Baycrest Hospital, 3560 Bathurst St, Toronto, ON, M6A 2E1, Canada

Stephen R. Arnott & Morris Freedman

Temerty Faculty of Medicine, University of Toronto, Medical Sciences Building, 1 King’s College Cir, Toronto, ON, M5S 1A8, Canada

David F. Tang-Wai

Department of Clinical Neurological Sciences, University of Western Ontario, 1151 Richmond St, London, ON, N6A 3K7, Canada

Elizabeth Finger

School of Communication Sciences and Disorders, University of Western Ontario, 1151 Richmond St, London, ON, N6A 3K7, Canada

Joseph B. Orange & Bruce Pollock

Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada

Joel Ramirez, Lorne Zinman & Sandra E. Black

Hurvitz Brain Sciences Program, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada

Joel Ramirez & Richard H. Swartz

Rotman Research Institute, 3560 Bathurst St, Toronto, ON, M6A 2E1, Canada

Malcolm Binns

Schulich School of Medicine& Dentistry, Division of Geriatric Medicine, Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada

Michael Borrie & Robert A. Hegele

LC Campbell Cognitive Neurology Research Unit, Sunnybrook Research Institute, University of Toronto, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada

Miracle Ozzoude

Robarts Research Institute, Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada

Robert Bartha & Stephen Pasternak

Unity Health Toronto, 61 Queen St E, Toronto, ON, M5C 2T2, Canada

David Munoz & Gustavo Saposnik

Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada

Mario Masellis

Department of Psychology Science, University of Alberta, 116 St & 85 Ave, Edmonton, AB, T6G 2R3, Canada

Roger A. Dixon

Neuroscience and Mental Health Institute, University of Alberta, 116 St & 85 Ave, Edmonton, AB, T6G 2R3, Canada

Roger A. Dixon

Ottawa Hospital Research Institute, 1053 Carling Ave, Ottawa, ON, K1Y 4E9, Canada

David Grimes

Northern Ontario School of Medicine, 935 Ramsey Lake Rd, Sudbury, ON, P3E 2C6, Canada

Ayman Hassan

Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada

Robert A. Hegele

Centre for Addiction and Mental Health, 1000 Queen St W, Toronto, ON, M6J 1H4, Canada

Sanjeev Kumar & Tarek Rajji

McMaster University, 1280 Main St W, Hamilton, ON, L8S 4L8, Canada

Demetrios Sahlas

VS, MH, and MCT were involved in the conception and design of the study, as well as acquisition and analysis of data. MCT, AAD, SMKF, ARF, AEL, ACR, AT, SRA, CM, DTW, EF, ER, JBO, JR, LZ, MB, MB, MF, MO, RB, RHS, DM, MM, SEB, RAD, DD, DG, AH, RAH, SK, PM, SP, BP, TR, JR, DS, and GS are part of the Ontario Neurodegenerative Disease Research Initiative.