References for "Failed efforts to thwart Alzheimer's disease raise questions"

Aisen PS, et al. "High-dose B Vitamin Supplementation and Cognitive Decline in Alzheimer Disease: A Randomized Controlled Trial," Journal of the American Medical Association (Oct. 15, 2008): Vol. 300, No. 15, pp. 1774–83.

Atri A, et al. "Long-term Course and Effectiveness of Combination Therapy in Alzheimer Disease," Alzheimer Disease and Associated Disorders (July–Sept., 2008): Vol. 22, No. 3, pp. 209–21.

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