[1] CATHOLIC UNIV NIJMEGEN,ST RADBOUD HOSP,DEPT MED,DIV GASTROENTEROL,6500 HB NIJMEGEN,NETHERLANDS
[2] CATHOLIC UNIV NIJMEGEN,ST RADBOUD HOSP,DEPT RADIOL,6500 HB NIJMEGEN,NETHERLANDS
[3] CATHOLIC UNIV NIJMEGEN,ST RADBOUD HOSP,DEPT RADIAT THERAPY,6500 HB NIJMEGEN,NETHERLANDS