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.
Steffen V, Gordillo E, Castaño A, Cano J, Machado A.Steffen V, et al.Neurosci Lett. 1991 Apr 15;125(1):15-8. doi: 10.1016/0304-3940(91)90118-d.Neurosci Lett. 1991.PMID: 1830378
Vizuete ML, de la Roza C, Steffen V, Machado A, Cano J.Vizuete ML, et al. Among authors: steffen v.Neuroscience. 1993 Sep;56(1):165-76. doi: 10.1016/0306-4522(93)90571-v.Neuroscience. 1993.PMID: 7901805
Steffen V, Santiago M, de la Cruz CP, Revilla E, Machado A, Cano J.Steffen V, et al.Hum Exp Toxicol. 1995 Nov;14(11):865-71. doi: 10.1177/096032719501401102.Hum Exp Toxicol. 1995.PMID: 8588946