%0 Journal Article %T P307 The clinical course of rectovaginal fistulas in Crohn's disease since the introduction of anti TNF drugs %A Tozer, P. %A Kayani, B. %A Balmforth, D. %A Phillips, R. %A Hart, A. %J Journal of Crohn's and Colitis %V 6 %N Supplement_1 %P S132-S132 %@ 1873-9946 %D 2012-02-01 %I Elsevier Science %~ DeepDyve