academic article

• Association between serum beta-carotene levels and decline of cognitive function in high-functioning older persons with or without apolipoprotein E 4 alleles: MacArthur studies of successful aging..  The journals of gerontology. Series A, Biological sciences and medical sciences.  61:616-20. 2006
• Education and APOE-e4 in longitudinal cognitive decline: MacArthur Studies of Successful Aging..  The journals of gerontology. Series B, Psychological sciences and social sciences.  60:P74-83. 2005