Chew Emily Y, Lindblad Anne S, Clemons Traci
Division of Epidemiology and Clinical Applications, National Institutes of Health, 10 Center Dr, Bldg 10, Clinical Research Center Room 3-2531, Mail Stop Center 1204, Bethesda, MD 20892-1204, USA.
Arch Ophthalmol. 2009 Dec;127(12):1678-9. doi: 10.1001/archophthalmol.2009.312.