1 LLR Molecular Haematology Unit, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
2 Department of Genetics, University of Navarra, Pamplona, Spain.
3 Department of Haematology, Royal Bournemouth Hospital, Bournemouth, UK.
4 NIHR Biomedical Research Centre, University of Oxford, Oxford, UK.