Keywords:
Colorectal cancer, prevention, ulcerative colitis, survival.
A. K. GÜRBÜZ
Gülhane Askeri Tıp Akademisi-Gastroenteroloji, B.D. Ankara.
F. M. GIARDIELLO
Division of Gastroenterology, The Johns Hopkins Hospital, Baltimore, Maryland.
T. M. BAYLESS
Division of Gastroenterology, The Johns Hopkins Hospital, Baltimore, Maryland.
Steven N. GOODMAN
Division of Gastroenterology, The Johns Hopkins Hospital, Baltimore, Maryland.
John H. YARDLEY
Division of Gastroenterology, The Johns Hopkins Hospital, Baltimore, Maryland.