Accepted for Publication: April 28, 2011.
Published Online: July 11, 2011. doi:10.1001/archneurol.2011.153
Author Contributions:Study concept and design: Wolk, Grachev, Trojanowski, Sherwin, and McLain. Acquisition of data: Wolk, Buckley, Kazi, Grady, Trojanowski, and Hamilton. Analysis and interpretation of data: Wolk, Grachev, Buckley, Trojanowski, McLain, and Arnold. Drafting of the manuscript: Wolk, Grachev, Trojanowski, and McLain. Critical revision of the manuscript for important intellectual content: Wolk, Grachev, Buckley, Kazi, Grady, Trojanowski, Hamilton, Sherwin, McLain, and Arnold. Statistical analysis: Grachev, Trojanowski, and McLain. Obtained funding: Wolk and Trojanowski. Administrative, technical, and material support: Buckley, Kazi, Grady, Trojanowski, Hamilton, Sherwin, and Arnold. Study supervision: Grachev, Trojanowski, and Arnold.
Financial Disclosure: The study was entirely sponsored by GE Healthcare. Dr Wolk has received consulting fees from GE Healthcare. Drs Grachev, Buckley, and Sherwin are employees of GE Healthcare. Mr McLain is a contractor for GE Healthcare.
Additional Contributions: We acknowledge the staff of i3 Statprobe for biometric services, programming, and statistical analyses. We thank GE Healthcare study team members for operational support (Kim Mansfield, MS), project management (Gill Farrar, PhD), data management (Ginger Lewis, MBA), and medical writing assistance with the study report (Ann Tate, MS, and Chris Devine, BSc).