1. Histocompatibility and ImmunogeneticsNHSBT, North Bristol Park Filton, Bristol UK
2. International Blood Group Reference Laboratory (IBGRL)NHSBT, North Bristol Park Filton, Bristol UK
3. Histocompatibility and ImmunogeneticsNHSBT, Charcot Road Colindale, London UK
4. Department of PaediatricsDorset County Hospital Dorchester UK