1. Memory and Aging Center, Department of Neurology, University of California in San Francisco , San Francisco, CA 94158 , USA
2. Douglas Mental Health University Institute , Montréal, QC H4H 1R3 , Canada
3. Department of Psychiatry, McGill University , Montréal, QC H3A 1A1 , Canada
4. Department of Neurology, Toulouse University Hospital , Toulouse 31400 , France
5. Department of Neurology, Behavioral Neurology Section, University of Colorado Anschutz Medical Campus , Aurora, CO 80238 , USA
6. Département de Psychologie, Université de Montréal , Montréal, QC H3C 3J7 , Canada
7. Centre de recherche de l’Institut Universitaire de Gériatrie de Montréal , Montréal, QC H3W 1W5 , Canada
8. Department of Speech, Language, and Hearing Sciences, The University of Texas at Austin , Austin, TX 78712-0114 , USA
9. Department of Otolaryngology—Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School , Boston, MA 02114 , USA