. 2002 Oct 16;2:11. doi: 10.1186/1471-244X-2-11
Copyright © 2002 Huf et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.
Figure 1.
Protocol summary