Correction available Otmar Bayer, Ludwig Maximilians University of Munich 20 June 2011 A correction to our article is available at http://www.biomedcentral.com/1471-2377/11/45. Competing interests Author of the article
Correction available
20 June 2011
A correction to our article is available at http://www.biomedcentral.com/1471-2377/11/45.
Competing interests
Author of the article