. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Genes Immun. 2015 Jan 29;16(3):213–220. doi: 10.1038/gene.2014.84
Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms