About the Authors

Perminder S. Sachdev

p.sachdev@unsw.edu.au

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales, Australia, Primary Dementia Collaborative Research Centre, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Darren M. Lipnicki

Affiliation Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

John Crawford

Affiliation Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Simone Reppermund

Affiliation Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Nicole A. Kochan

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales, Australia

Julian N. Trollor

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Department of Developmental Disability Neuropsychiatry, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Wei Wen

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales, Australia, Primary Dementia Collaborative Research Centre, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Brian Draper

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Primary Dementia Collaborative Research Centre, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Academic Department for Old Age Psychiatry, Prince of Wales Hospital, Sydney, New South Wales, Australia

Melissa J. Slavin

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Primary Dementia Collaborative Research Centre, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Kristan Kang

Affiliation Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Ora Lux

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, South-Eastern Area Laboratory Services, Prince of Wales Hospital, Sydney, New South Wales, Australia

Karen A. Mather

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales, Australia

Henry Brodaty

Affiliations Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Primary Dementia Collaborative Research Centre, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia, Academic Department for Old Age Psychiatry, Prince of Wales Hospital, Sydney, New South Wales, Australia

the Sydney Memory
Ageing Study Team

Affiliation Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales, Australia

Competing Interests

Perminder Sachdev has received payment for lectures by Eli Lilly and Pfizer. Henry Brodaty has received payment for lectures by Pfizer, Janssen, and Novartis, is on the Alzheimer’s Advisory Boards of these companies and Lunbeck, consults for Wyeth, and has received institutional grants for an Alzheimer’s drug trial from Sanofi and Medivation. All other authors have declared that no competing interests exist. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: PSS NAK JNT BD MJS HB. Analyzed the data: DML JC. Wrote the paper: PSS DML. Obtained research funds: PSS HB. Supervised data gathering and/or analysis: PSS SR NAK JNT BD MJS KK. Neuroimaging: WW. Genetic testing: KAM. Blood sample analysis: OL.