. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Obesity (Silver Spring). 2013 Jun;21(6):1223–1225. doi: 10.1002/oby.20199
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