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.
Malik S, Cohen BH, Robinson J, Fried A, Sila CA.Malik S, et al. Among authors: cohen bh.Arch Neurol. 1992 Feb;49(2):170-3. doi: 10.1001/archneur.1992.00530260072023.Arch Neurol. 1992.PMID: 1736851
Gupta A, Cohen BH, Ruggieri P, Packer RJ, Phillips PC.Gupta A, et al. Among authors: cohen bh.Neurology. 2003 Jan 14;60(1):130-2. doi: 10.1212/01.wnl.0000042321.94839.78.Neurology. 2003.PMID: 12525736Clinical Trial.