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.
Giovannucci E, Ascherio A, Rimm EB, Colditz GA, Stampfer MJ, Willett WC.Giovannucci E, et al. Among authors: ascherio a.Ann Intern Med. 1995 Mar 1;122(5):327-34. doi: 10.7326/0003-4819-122-5-199503010-00002.Ann Intern Med. 1995.PMID: 7847643
Hu FB, Stampfer MJ, Colditz GA, Ascherio A, Rexrode KM, Willett WC, Manson JE.Hu FB, et al. Among authors: ascherio a.JAMA. 2000 Jun 14;283(22):2961-7. doi: 10.1001/jama.283.22.2961.JAMA. 2000.PMID: 10865274