The IBD Unit at Santa Cruz Hospital (São Paulo, Brazil)
The Proctology Department at Hôpital Paris Saint-Joseph (Paris, France)
Nottingham Fistula Research Group (Nottingham, United Kingdom)
Washington University School of Medicine in St. Louis (Missouri, USA)
IBD Leuven Fistula Research Unit (Leuven, Belgium)
Icahn School of Medicine at Mount Sinai (New York, USA)
University Hospital of Ghent (Ghent, Belgium)
The Fistula Research Unit at St. Mark’s Hospital (London, United Kingdom)