Authors: Michael J. O’Brien, Sidney J. Winawer, Ann G. Zauber, Leonard S. Gottlieb, Stephen S. Sternberg, Barbara Diaz, G. Richard Dickersin, Stephen L. Ewing, Stephen A. Geller, Dennis Kasimian, Richard Komorowski, Arnold H. Szporn - Gastroenterology 1990 cited by 819
