Genetic variations in SMAD7 are associated with colorectal cancer risk in the colon cancer family registry. oleh Xuejuan Jiang, J Esteban Castelao, David Vandenberg, Angel Carracedo, Carmen M Redondo, David V Conti, Jesus P Paredes Cotoré, John D Potter, Polly A Newcomb, Michael N Passarelli, Mark A Jenkins, John L Hopper, Steven Gallinger, Loic Le Marchand, María E Martínez, Dennis J Ahnen, John A Baron, Noralane M Lindor, Robert W Haile, Manuela Gago-Dominguez