@article{witeprints2858,
          volume = {34},
           month = {November},
           title = {Low macular pigment optical density is associated with lower cognitive performance in a large, population-based sample of older adults.},
          author = {Stephen Beatty},
            year = {2013},
         journal = {Neurobiology of Ageing},
             url = {http://repository.wit.ie/2858/}
}