An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Parra-Medina D, D'antonio A, Smith SM, Levin S, Kirkner G, Mayer-Davis E; POWER study.Parra-Medina D, et al. Among authors: levin s.J Am Diet Assoc. 2004 Jan;104(1):70-5. doi: 10.1016/j.jada.2003.10.014.J Am Diet Assoc. 2004.PMID: 14702587Clinical Trial.