Isolated perianal Crohn's disease: a systematic review and expert consensus proposing novel diagnostic criteria and management advice

L Hanna, L Munster, Shivani Joshi, Jarmila D.W. van der Bilt, Christianne J. Buskens, Ailsa Hart, Phil Tozer, Julien Adam, Easan Anand, Sulak Anandabaskaran, David. H Ballard, Corina Behrenbruch, Gabriele Bislenghi, Cristiana Bonifacio, Michele Carvello, Ignacio Catalán-Serra, Benjamin. L Cohen, Jean-Frédéric Colombel, Susan. J Connor, André D’Hoore, Isabelle De Kock, Danny De Looze, Vincent de Parades, Parakkal Deepak, Anders Dige, Nik S Ding, Sara El Ouali, Nadia Fathallah, Jeroen Geldof, Stefan. D Holubar, Paulo. G Kotze, Jean-Frédéric LeBlanc, Amy. L Lightner, Lilli Lundby, Phillip. F.C Lung, Adriana Martinez, Jeffrey. D McCurdy, Benjamin. D McDonald, Dermot. P.B McGovern, Gordon. W Moran, Theo Pelly, Alexandros. D Polydorides, Nick Powell, Natália. S. F Queiroz, David. T Rubin, Kapil Sahnan, Shaji Sebastian, Antonino Spinelli, Jaap Stoker, Séverine Vermeire, Bram Verstockt, Janindra Warusavitarne, Leon. S Winata, Serre-Yu Wong