COGENT (COlorectal cancer GENeTics): an international consortium to study the role of polymorphic variation on the risk of colorectal cancer. by Tomlinson, I, Dunlop, M, Campbell, H, Zanke, B, Gallinger, S, Hudson, T, Koessler, T, Pharoah, P, Niittymäki, I, Niittymäkix, I, Tuupanen, S, Tuupanenx, S, Aaltonen, L, Hemminki, K, Lindblom, A, Försti, A, Sieber, O, Lipton, L, van Wezel, T, Morreau, H, Wijnen, J, Devilee, P, Matsuda, K, Nakamura, Y, Castellví-Bel, S