[1] UNIV CAMBRIDGE,ADDENBROOKES HOSP,DEPT MED,CAMBRIDGE CB2 2QR,ENGLAND
[2] NORTHWICK PK HOSP & CLIN RES CTR,CLIN RES CTR,KENNEDY GALTON CTR,HARROW HA1 3UJ,MIDDX,ENGLAND
[3] UNIV CAMBRIDGE,ADDENBROOKES HOSP,DEPT CLIN BIOCHEM,CAMBRIDGE CB2 2QR,ENGLAND