Serum and macular response to carotenoid-enriched egg supplementation in human subjects: the Egg Xanthophyll Intervention clinical Trial. Kelly D, Nolan JM, Howard AN, Stack J, Akuffo KO, Moran R, Thurnham DI, Dennison J, Meagher KA, Beatty S. British Journal of Nutrition. January 2017.

Serum and macular response to carotenoid-enriched egg supplementation in human subjects: the Egg Xanthophyll Intervention clinical Trial. Kelly D, Nolan JM, Howard AN, Stack J, Akuffo KO, Moran R, Thurnham DI, Dennison J, Meagher KA, Beatty S. British Journal of Nutrition. January 2017.