[1] UNIV HOSP DIJKZIGT,DEPT GEN SURG,3015 GD ROTTERDAM,NETHERLANDS
[2] UNIV HOSP DIJKZIGT,DEPT PATHOL,3015 GD ROTTERDAM,NETHERLANDS
[3] UNIV HOSP DIJKZIGT,DEPT RADIOL,3015 GD ROTTERDAM,NETHERLANDS
[4] UNIV HOSP DIJKZIGT,DEPT ANAESTHESIOL,3015 GD ROTTERDAM,NETHERLANDS
[5] MUNICIPAL HOSP RIJNSTATE,DEPT SURG,ARNHEM,NETHERLANDS