[1] FLINDERS UNIV S AUSTRALIA,MED CTR,DEPT MED,BEDFORD PK,SA 5042,AUSTRALIA
[2] FLINDERS UNIV S AUSTRALIA,MED CTR,DEPT SURG,BEDFORD PK,SA 5042,AUSTRALIA
[3] ROYAL ADELAIDE HOSP,ADELAIDE,SA 5000,AUSTRALIA
[4] ROYAL HALLAMSHIRE HOSP,CLIN RES UNIT,SHEFFIELD S10 2JF,S YORKSHIRE,ENGLAND