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.
Alonso A, Jick SS, Olek MJ, Hernán MA.Alonso A, et al. Among authors: hernan ma.J Neurol. 2007 Dec;254(12):1736-41. doi: 10.1007/s00415-007-0602-z. Epub 2007 Oct 1.J Neurol. 2007.PMID: 17896096
Alonso A, Hernán MA, Ascherio A.Alonso A, et al. Among authors: hernan ma.Acta Neurol Scand. 2008 Jan;117(1):15-20. doi: 10.1111/j.1600-0404.2007.00898.x.Acta Neurol Scand. 2008.PMID: 18095952