Risk factors associated with small bowel adenocarcinoma in crohn’s disease a case control study. G Piton, J Cosnes, E Monnet, L Beaugerie, P Seksik, G Savoye, G Cadiot, B Flourié, P Marteau, M Lémann, JF Colombel, E Khouri, B Bonaz, F Carbonnel https://www.getaid.org/images/publications/Resume_G.Piton_DDW_2007.pdf