1. Department of Clinical Biochemistry and Metabolic Medicine Royal Liverpool Hospital Liverpool UK
2. Laboratory Medicine, Northern General Hospital Sheffield Teaching Hospitals NHS Foundation Trust Sheffield UK
3. Paediatrics Department Bradford Teaching Hospitals NHS Foundation Trust, Bradford Royal Infirmary Bradford UK
4. Red cell and General Haematology Department Manchester Royal Infirmary Manchester UK
5. Haematology Department Bradford Royal Infirmary Bradford UK
6. Clinical Nurse Haemoglobinopathy Bradford Royal Infirmary Bradford UK
7. Scottish Trace Element and Micronutrient Diagnostic and Research Laboratory, Department of Clinical Biochemistry Glasgow Royal Infirmary Glasgow UK
8. Adult Inherited Metabolic Diseases Salford Royal Hospital NHS Trust Salford UK
9. Division of Diabetes, Endocrinology and Gastroenterology University of Manchester Manchester UK