Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Scientific Reports 4, Article number: 3544 10.1038/srep03544 (2013); Published: December182013; Updated: February112015
The original version of this Article contained a typographical error in the spelling of the author Santiago Ramon y Cajal, which was incorrectly given as Santiago Ramony Cajal. This has now been corrected in the PDF and HTML versions of the Article.
