Hammond, Christopher J. and Melissa Liew, S. H. and Van Kuijk, Frederik J. and Beatty, Stephen and Nolan, John M. and Spector, Tim D. and Gilbert, Clare E. (2012) The heritability of macular response to supplemental lutein and zeaxanthin : A classic twin study. Investigative Ophthalmology and Visual Science, 53 (8). pp. 4963-4968. ISSN 0146-0404