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.
Durán I, Martínez-Cáceres EM, Río J, Barberà N, Marzo ME, Montalban X.Durán I, et al. Among authors: barbera n.Brain. 1999 Dec;122 ( Pt 12):2297-307. doi: 10.1093/brain/122.12.2297.Brain. 1999.PMID: 10581223
Río J, Barberà N, Tintoré M, Brieva L, Montalbán X.Río J, et al. Among authors: barbera n.Med Clin (Barc). 2000 Feb 12;114(5):169-70. doi: 10.1016/s0025-7753(00)71232-2.Med Clin (Barc). 2000.PMID: 10738721Spanish.