Correction to: Bone Marrow Transplantation (2013) 48, 982–987; doi:10.1038/bmt.2012.261; published online 14 January 2013

Since the publication of this article, the authors have asked that the following text be added to the acknowledgements. ‘TJL and AJP were supported, in part, by the National Institute for Health Research (NIHR) Oxford Biomedical Research Centre at Oxford University Hospitals NHS Trust and University of Oxford’. The correct acknowledgements section is shown below.

The authors would like to apologize for any inconvenience this may have caused.