Colorectal cancer in patients under close colonoscopic surveillance

Douglas J. Robertson, E. Robert Greenberg, Michael Beach, Robert S. Sandler, Dennis Ahnen, Robert W. Haile, Carol A. Burke, Dale C. Snover, Robert S. Bresalier, Gail McKeown-Eyssen, Jack S. Mandel, John H. Bond, Rosalind U. Van Stolk, Robert W. Summers, Richard Rothstein, Timothy R. Church, Bernard F. Cole, Tim Byers, Leila Mott, John A. Baron