1 Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy; Gastroenterology Unit, Azienda Ospedale-Università Padova, Padua, Italy.
2 Small Bowel Section, Dr C. Bonorino Udaondo Gastroenterology Hospital, Buenos Aires, Argentina; Research Institutes, Universidad del Salvador, Buenos Aires, Argentina.
3 Department of Gastroenterology and Endoscopy, Paris Cité University, European Georges Pompidou Hospital, APHP, Paris, France.
4 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Pediatrics, Örebro University Hospital, Örebro, Sweden; Division of Digestive and Liver Disease, Department of Medicine, Columbia University Medical Center, New York, New York.