[1] MEM SLOAN KETTERING CANC CTR,GASTROINTESTINAL CANC RES LAB,NEW YORK,NY 10021
[2] ROYAL MELBOURNE HOSP,DEPT GASTROENTEROL,PARKVILLE,VIC 3050,AUSTRALIA
[3] VET ADM MED CTR,GASTROENTEROL SECT,MINNEAPOLIS,MN
[4] TEL AVIV MED CTR & SCH MED,DEPT GASTROENTEROL,TEL AVIV,ISRAEL
[5] VET ADM MED CTR,MED SERV,SALT LAKE CITY,UT 84148
[6] MT SINAI MED CTR,ENDOSCOPY UNIT,NEW YORK,NY 10029
[7] ODENSE UNIV HOSP,DEPT SURG GASTROENTEROL,DK-5000 ODENSE,DENMARK
[8] MALLORY INST PATHOL,BOSTON,MA 02118
[9] IMPERIAL CANC RES FUND,GENET EPIDEMIOL LAB,LEEDS,W YORKSHIRE,ENGLAND
[10] MEM SLOAN KETTERING CANC CTR,GI ENDOSCOPY UNIT,NEW YORK,NY 10021
[11] MEM SLOAN KETTERING CANC CTR,NUTR SECT,NEW YORK,NY 10021
[12] TATA MEM HOSP,DIV MED GASTROENTEROL,BOMBAY 400012,MAHARASHTRA,INDIA
[13] ANDERSON CANC CTR,DEPT GASTROINTESTINAL ONCOL & DIGEST DIS,SAN ANTONIO,TX
[14] UNIV HEIDELBERG,ACAD TEACHING HOSP,MED CLIN 1,LUDWIGSBURG,GERMANY
[15] CREIGHTON UNIV,DEPT PREVENT MED & PUBL HLTH,OMAHA,NE 68178