Interaction between polymorphisms in aspirin metabolic pathways, regular aspirin use and colorectal cancer risk: A case-control study in unselected white European populations. oleh Harsh Sheth, Emma Northwood, Cornelia M Ulrich, Dominique Scherer, Faye Elliott, Jennifer H Barrett, David Forman, C Roland Wolf, Gillian Smith, Michael S Jackson, Mauro Santibanez-Koref, Robert Haile, Graham Casey, Mark Jenkins, Aung Ko Win, John L Hopper, Loic Le Marchand, Noralane M Lindor, Stephen N Thibodeau, John D Potter, John Burn, D Timothy Bishop