1. Department of Clinical Biochemistry (D.J.H., M.S., S.O.), Addenbrooke’s Hospital, Cambridge CB2 2QR, United Kingdom
2. Department of Haematology-Oncology (M.M.), Queen Mary’s Hospital, Sidcup, DA14 6LT, United Kingdom
3. Department of Clinical Biochemistry (M.N.F.-W.), Southend Hospital, Essex SS0 0RY, United Kingdom
4. Clinical Laboratory (R.M.-B., G.W.), Royal Surrey County Hospital, Guildford GU2 7XX, United Kingdom
5. Department of Clinical Biochemistry (R.M.-B.), Queen Mary’s Hospital, Sidcup, DA14 6LT, United Kingdom