. 2012 Dec 1;2(12):1505–1519. doi: 10.1534/g3.112.004473
Copyright © 2012 Crawford et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution Unported License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.