Significant haemoglobinopathies: guidelines for screening and diagnosis.

Department of Haematology, Manchester Royal Infirmary, Manchester, Department of Haematology, Imperial College Healthcare NHS Trust, St Mary’s Hospital, London, Programme Advisor, NHS Sickle Cell and Thalassaemia Screening Programme, Division of Health and Social Care Research, School of Medicine, King’s College London, London, Department of Haematology, Frenchay Hospital, Bristol, Department of Haematology, James Cook University Hospital, Middlesbrough, Patient representative, Sickle Cell Society, Manchester, Diagnostic Haematology, Imperial College Healthcare Trust, Hammersmith Hospital, London, Department of Paediatric Haematology, School of Medicine, King’s College London, King’s College Hospital, London, UK NEQAS for General Haematology, Watford, Hertfordshire, and Programme Director, NHS Sickle Cell and Thalassaemia Screening Programme, Division of Health and Social Care Research, School of Medicine, King’s College London, London, UK