June-Anne Gold MBBS, MRCPCH, Chelsey Ruth MS, CGC, Kathryn Osann PhD, Pamela Flodman MSc, MS, Barbara McManus, Hye-Seung Lee PhD, Sandra Donkervoort MS, CGC, Manaswitha Khare MBBS, Elizabeth Roof MA, Elizabeth Dykens PhD, Jennifer L Milller, MD, Daniel J. Driscoll MD, PhD, Merlin G. Butler MD, PhD, Janalee Heinemann MSW, Suzanne Cassidy MD and Virginia E. Kimonis MD

Genet Med (2013). advance online publication, August 8, 2013; doi:10.1038/gim.2013.97

In the published version of this article, Jennifer L Milller M.D. (Department of Pediatrics, University of Florida, Gainesville, FL, USA) was omitted from the author list. The authors regret the error.