In the article “Tbr2 Deficiency in Mitral and Tufted Cells Disrupts Excitatory–Inhibitory Balance of Neural Circuitry in the Mouse Olfactory Bulb” by Rumiko Mizuguchi, Hiromi Naritsuka, Kensaku Mori, and Yoshihiro Yoshihara, which appeared on pages 8831–8844 of the June 27, 2012 issue, the authors regret that two authors (Chai-An Mao and William H. Klein) and two grant citations (NEI grant and Welch Foundation grant) were inadvertently omitted. The corrected author list with their corresponding affiliation information is as follows: “Rumiko Mizuguchi,1 Hiromi Naritsuka,2 Kensaku Mori,2 Chai-An Mao,3 William H. Klein,3 and Yoshihiro Yoshihara1; 1Laboratory for Neurobiology of Synapse, RIKEN Brain Science Institute, Saitama 351-0198, Japan, 2Department of Physiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan, and 3Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030.” The Author Contribution footnote should have read “Author contributions: R.M and Y.Y. designed research; R.M. performed research; H.N., K.M., C.-A.M., and W.H.K. contributed unpublished reagents/analytic tools; R.M. analyzed data; R.M. and Y.Y. wrote the paper.” The Acknowledgment footnote should have read “This work was supported in part by a Grant-in-Aid for Young Researchers (R.M.), Scientific Research (B) (Y.Y.), Priority Areas (Cellular Sensor) (Y.Y.), and Innovative Areas (Systems Molecular Ethology) (Y.Y.) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, NEI Grant EY011930 (C.-A.M and W.H.K.), and Welch Foundation Grant G-0010 (C.-A.M and W.H.K.).”