Michal Lapidot\'s name was incorrectly listed as Lapidot Michal. The correct citation is: Lapidot M, Mizrahi-Man O, Pilpel Y (2008) Functional Characterization of Variations on Regulatory Motifs. PLoS Genet 4(3): e1000018. doi:10.1371/journal.pgen.1000018
