Mary Sano, Carolyn W. Zhu, Jeffrey Kaye, James C. Mundt, Tamara L. Hayes, Steven Ferris, Ronald G. Thomas, Chung Kai Sun, Yanxin Jiang, Michael C. Donohue, Lon S. Schneider, Susan Egelko, Paul S. Aisen, Howard H. Feldman, for the Alzheimer Disease Cooperative Study Investigators