Power, R., Coen, R., Beatty, S., Mulcahy, R., Moran, R., Stack, J., … Nolan, J. Supplemental Retinal Carotenoids Enhance Memory in Healthy Individuals with Low Levels of Macular Pigment in A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Journal of Alzheimer’s Disease : JAD, 61(3), 947-961. https://doi.org/10.3233/JAD-170713 (Original work published 2018)