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.
Stein AD, Wang M, Ramirez-Zea M, Flores R, Grajeda R, Melgar P, Ramakrishnan U, Martorell R.Stein AD, et al.Am J Epidemiol. 2006 Dec 15;164(12):1160-70. doi: 10.1093/aje/kwj328. Epub 2006 Oct 3.Am J Epidemiol. 2006.PMID: 17018700
Ramakrishnan U, Kuklina E, Stein AD.Ramakrishnan U, et al. Among authors: stein ad.Am J Clin Nutr. 2002 Dec;76(6):1256-60. doi: 10.1093/ajcn/76.6.1256.Am J Clin Nutr. 2002.PMID: 12450891