Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambs CB101HH, UK.|Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambs CB101HH, UK.|Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambs CB101HH, UK.|Experimental Cancer Genetics, The Wellcome Trust Sanger Institute, Hinxton, Cambs CB101HH, UK.