. 2013 Jan 1;1(1):2324709612473274. doi: 10.1177/2324709612473274
© 2013 American Federation for Medical Research
This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (http://www.uk.sagepub.com/aboutus/openaccess.htm).