1. Cognitive Neuroscience Division of the Department of Neurology and Taub Institute for Research on Alzheimer's Disease and the Aging Brain Vagelos College of Physicians and Surgeons Columbia University New York New York USA
2. Biodemography of Aging Research Unit Social Science Research Institute Duke University Durham North Carolina USA
3. Department of Medicine Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
4. Brookdale Department of Geriatrics and Palliative Medicine Icahn School of Medicine at Mount Sinai New York New York USA
5. James J. Peters VA Medical Center Bronx New York USA
6. Department of Biostatistics Mailman School of Public Health Columbia University New York New York USA