BibTex format
@article{Lopes:2009:10.1167/iovs.08-2385,
author = {Lopes, MC and Andrew, T and Carbonaro, F and Spector, TD and Hammond, CJ},
doi = {10.1167/iovs.08-2385},
journal = {INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE},
pages = {126--131},
title = {Estimating Heritability and Shared Environmental Effects for Refractive Error in Twin and Family Studies},
url = {http://dx.doi.org/10.1167/iovs.08-2385},
volume = {50},
year = {2009}
}