Key references: Perianal fistulising Crohn disease in adults

  • Lichtenstein GR, Loftus EV, Isaacs KL, Regueiro MD, Gerson LB, Sands BE. ACG Clinical Guideline: Management of Crohn's Disease in Adults. Am J Gastroenterol 2018;113(4):481-517. https://www.ncbi.nlm.nih.gov/pubmed/29610508