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.
Viudes A, Cantón E, Pemán J, López-Ribot JL, Gobernado M.Viudes A, et al.Rev Esp Quimioter. 2002 Mar;15(1):32-42.Rev Esp Quimioter. 2002.PMID: 12582435Review.Spanish.