BMC Cancer 2008, 8:19 http://www.biomedcentral.com/1471-2407/8/19 Pre-publication history The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2407/8/19/prepub Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 18 of 18 (page number not for citation purposes)