Correction to: Genet Med advance online publication, 26 October 2017; doi:https://doi.org/10.1038/gim.2017.134

Zoe McDonald, BSc, was omitted from the list of article coauthors. Her name should have been included as the seventh author, following Clare Elizabeth Hunt. Her affiliation is Victorian Clinical Genetics Services, Parkville, Victoria, Australia. The authors regret the error.