Beatty Stephen, Nolan John M, Muldrew Katherine A, Woodside Jayne, Stevenson Michael R, Chakravarthy Usha
Macular Pigment Research Group, Waterford Institute of Technology, Waterford City, Waterford, Republic of Ireland.
School of Medicine and Health Sciences, Queen's University of Belfast, Belfast, United Kingdom.
Ophthalmology. 2013 Mar;120(3):645. doi: 10.1016/j.ophtha.2012.09.013.