BioMed Central Publisher of Open Access peer-reviewed biomedical research UTF-8 data:image/x-icon;base64,R0lGODlhEAAQAOb/AP///////vz//fz+/fn8/Pj5/vb2/vT2++/7++3z8+bs+uLs7OHr9t3u7t3n+N3n79zo6Nnx8djj49fi99Tl5dTe8NPu6s/d3s7b887a8svm48vj4svg4MvR8crU9cjd3cXV8MHX18DR5bzZ2bzP77rMzLjL57LK5rHOzqrD4anR0anIyKm775+31pu7u5it5I6zs4erq4Wvr4Oh2oGzs4CwtHub23qp4Hmb2nl5eXKkpGygoGWhoVqL2FqA11ienld+z1SYmFB9006Pj05+0kp9zkZ51T+IiD6DgzpuzDdr1TRmzDNvxzNn0zJ/fy12dip2dihgyyNeyR5ubhZZxRRubhBrawloaABhYQBgYABWVgBRUQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACwAAAAAEAAQAEAHiIA5goOEhYJNMwCKi4wxWIIAJkwPjIoLTlURggZFSSCVABpPKACQigwiHR0TCjRaPwmlOTc+oIxDV4I9QraLRzumLVIkFiMuKhSMprYaNIumL0AVBosXT1oxsg5EGL0NVUGCRja9ijqPOUrk5TxTgixUJ70lSAiQGFFLKRoSDRcuMEIoMkSQUCAAOw== 7 http://www.biomedcentral.com/info/about/toolbar/firefox/bmc.src http://www.biomedcentrak.com/info/about/toolbar/firefox/bmc.gif http://www.biomedcentral.com/search/