Harris JR, Patel MK, Juliao PS, Suchdev PS, Ruth LJ, Were V, Ochieng C, Faith SH, Kola S, Otieno R, Sadumah I, Obure A, Quick R. Addressing inequities in access to health products through the use of social marketing, community mobilization, and local entrepreneurs in rural Western Kenya. J Popul Res. 2012;2012:470598. doi: 10.1155/2012/470598
Hartman M, Bolton E, Fehnel SE. Accounting for age differences on the Wisconsin Card Sorting Test: decreased working memory, not inflexibility. Psychol Aging. 2001 Sep 1;16(3):385-99.