Accepted for Publication: October 14, 2014.
Published Online: January 5, 2015. doi:10.1001/jamaneurol.2014.3781.
Study concept and design: Liljegren, Naasan, Rankin, Englund, Miller.
Acquisition, analysis, or interpretation of data: Liljegren, Naasan, Temlett, Perry, Rankin, Merrilees, Grinberg, Seeley, Englund.
Drafting of the manuscript: Liljegren, Naasan, Seeley, Englund.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Liljegren, Naasan, Temlett, Rankin.
Obtained funding: Liljegren, Seeley, Englund.
Administrative, technical, or material support: Naasan, Merrilees, Grinberg, Seeley.
Study supervision: Englund, Miller.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Liljegren received funding from the Hennerlöfska Foundation for Medical Research, The Swedish Society of Medicine, Stockholm, Sweden, and the Trolle-Wachtmeister Foundation for Medical Research, Lund, Sweden. Dr Seeley received support from grants AG023501 and AG19724 from the National Institutes of Health (NIH), the Consortium for Frontotemporal Dementia Research, and the Tau Consortium. Dr Englund received funding from the Trolle-Wachtmeister Foundation. Dr Miller is funded by NIH grant P50 AG023501 and the Hillblom Aging Network.
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We thank our patients and their families for their valuable contributions. They were not compensated for their contributions.