TY - BOOK AU - Eastwood,Gregory L. TI - Premalignant conditions of the gastrointestinal tract SN - 0-444-01535-3 PY - 1991/// CY - New York [etc.] PB - Elsevier KW - Gastrointestinal system KW - Cancer KW - Pathogenesis KW - Precancerous conditions N1 - Includes bibliographical references and index ER -