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.
Frankel M, Cummings JL, Robertson MM, Trimble MR, Hill MA, Benson DF.Frankel M, et al. Among authors: cummings jl.Neurology. 1986 Mar;36(3):378-82. doi: 10.1212/wnl.36.3.378.Neurology. 1986.PMID: 3456493
Frankel M, Cummings JL.Frankel M, et al. Among authors: cummings jl.Neurology. 1984 Mar;34(3):359-61. doi: 10.1212/wnl.34.3.359.Neurology. 1984.PMID: 6583541