[1] FDN DETECTION HEREDITARY TUMOURS,LEIDEN,NETHERLANDS
[2] JYVASKYLA CENT HOSP,DEPT SURG,JYVASKYLA,FINLAND
[3] CREIGHTON UNIV,SCH MED,DEPT PREVENT MED,OMAHA,NE 68178
[4] CREIGHTON UNIV,CTR HEREDITARY CANC,DEPT PREVENT MED,OMAHA,NE 68178
[5] HYOGO MED UNIV,DEPT SURG 2,NISHINOMIYA,HYOGO 663,JAPAN
[6] INST NAZIONALE TUMORI,MILAN,ITALY
[7] UNIV TEXAS,MD ANDERSON CANC CTR,HOUSTON,TX 77025
[8] HVIDORE UNIV,DANISH POLYPOSIS REGISTRY,DEPT SURG GASTROENTEROL,HVIDOVRE,DENMARK
[9] HEREDITARY GASTROINTESTINAL CANC PREVENT CTR,BRINDISI,ITALY
[10] UNIV CLIN BASEL,DEPT RES,HUMAN GENET GRP,BASEL,SWITZERLAND
[11] LEIDEN UNIV,INST HUMAN GENET,2300 RA LEIDEN,NETHERLANDS