%0 Journal Article %T P521 Infection of the anal canal by human papillomavirus in Crohn’s disease %A Guzela, V %A Sobrado Júnior, C %A Nadal, S %A Nadal, C R %A Villa, L L %A Gonçalves, A P %A Boarini, L R %A Nahas, S C %A Cecconello, I %J Journal of Crohn's and Colitis %V 14 %N Supplement_1 %P S450-S450 %@ 1873-9946 %D 2020-01-15 %I Elsevier Science %~ DeepDyve