[1] UNIV WALES,WELSH NATL SCH MED,DEPT DIAG RADIOL,CARDIFF CF4 4XN,GLAMORGANSHIRE,WALES
[2] UNIV WALES,WELSH NATL SCH MED,DEPT CHILD HLTH,CARDIFF CF4 4XN,GLAMORGANSHIRE,WALES
[3] UNIV WALES,WELSH NATL SCH MED,DEPT MED,CARDIFF CF4 4XN,GLAMORGANSHIRE,WALES
[4] UNITED OXFORD HOSP,DEPT DIAG RADIOL,OXFORD,ENGLAND
[5] UNITED OXFORD HOSP,DEPT MED,OXFORD,ENGLAND
[6] UNITED OXFORD HOSP,DEPT SURG,OXFORD,ENGLAND
[7] PUBL HLTH LAB,OXFORD,ENGLAND