Classifying perianal fistulising Crohn's disease: an expert consensus to guide decision-making in daily practice and clinical trials

Jeroen Geldof, Nusrat Iqbal, Jean‐Frédéric LeBlanc, Sulak Anandabaskaran, R Sawyer, Christianne J. Buskens, Willem A. Bemelman, K Gecse, Lilli Lundby, Amy L. Lightner, Silvio Danese, Antonino Spinelli, Michele Carvello, Omar Faiz, Janindra Warusavitarne, Phillip Lung, Danny De Looze, André D’Hoore, Séverine Vermeire, Ailsa Hart, Phil Tozer