Correction to: Molecular Psychiatry advance online publication, 18 May 2010; doi: 10.1038/mp.2010.59

After the article was published online, the authors noted G Germain's name was incomplete in the author list. The corrected author list appears below:

AM Addington, J Gauthier, A Piton, FF Hamdan, A Raymond, N Gogtay, R Miller, J Tossell, J Bakalar, G Inoff-Germain, P Gochman, R Long, JL Rapoport and GA Rouleau