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.
Smith GC, Wood AM, White IR, Pell JP, Hattie J.Smith GC, et al. Among authors: pell jp.Am J Epidemiol. 2010 Mar 15;171(6):736-44. doi: 10.1093/aje/kwp448. Epub 2010 Feb 4.Am J Epidemiol. 2010.PMID: 20133517
Smith GC, Pell JP, Walsh D.Smith GC, et al. Among authors: pell jp.Lancet. 2001 Jun 23;357(9273):2002-6. doi: 10.1016/S0140-6736(00)05112-6.Lancet. 2001.PMID: 11438131
Smith GC, Pell JP, Dobbie R.Smith GC, et al. Among authors: pell jp.Lancet. 2003 Nov 29;362(9398):1779-84. doi: 10.1016/s0140-6736(03)14896-9.Lancet. 2003.PMID: 14654315