[1] UNIV EDINBURGH, DEPT BIOCHEM, IMPERIAL CANC RES FUND, MOLEC PHARMACOL & DRUG METAB LAB, EDINBURGH EH8 9YL, MIDLOTHIAN, SCOTLAND
[2] UNIV EDINBURGH, ROYAL EDINBURGH INFIRM, DEPT CLIN CHEM, EDINBURGH EH10 5HF, MIDLOTHIAN, SCOTLAND
[3] UNIV EDINBURGH, ROYAL EDINBURGH INFIRM, DEPT MED, EDINBURGH EH10 5HF, MIDLOTHIAN, SCOTLAND