[1] RADCLIFFE INFIRM,MRC,CLIN PHARMACOL UNIT,WOODSTOCK RD,OXFORD OX2 6HE,ENGLAND
[2] UNIV OXFORD,RADCLIFFE INFIRM,DEPT CLIN PHARMACOL,OXFORD OX2 6HE,ENGLAND
[3] UNIV NEWCASTLE,ROYAL NEWCASTLE HOSP,DEPT CLIN PHARMACOL,NEWCASTLE,NSW 2308,AUSTRALIA
[4] CHRISTIAN MED COLL & HOSP,DEPT CLIN PHARMACOL,VELLORE 632004,TAMIL NADU,INDIA