URL: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=16566817&query_hl=1&itool=pubmed_docsum Authors: Goñi, JR / Vaquerizas, JM / Dopazo, / Orozco, Modesto