Nat. Genet. 33, 401–406 (2003).

Dina L. Rooney and Melanie M. Ihrig, of the Division of Comparative Medicine, Massachusetts Institute of Technology, were inadvertently omitted from the list of authors. The complete author list is D A Rubinson, C P Dillon, A V Kwiatkowski, C Sievers, L Yang, J Kopinja, D L Rooney, M M Ihrig, M T McManus, F B Gertler, M L Scott & L Van Parijs. In addition, the authors neglected to acknowledge funding from Broad Medical Research Program.