1. Department of Surgery and Cancer, Imperial College, London, UK
2. Office of Research and Innovation, Royal College of Surgeons in Ireland, Ireland
3. Department of Chronic Diseases, Metabolism and Ageing (Chrometa), Translational Research Center for Gastrointestinal Disorders (TARGID), University of Leuven, Leuven, Belgium
4. Department of Surgical, Oncological and Gastroenterologica Sciences, University of Padua, Padua, Italy
5. Department of Surgery, University of Chicago, Chicago, Illinois, USA
6. Department of Medicine, Northwestern University, Chicago, Illinois, USA
7. Department of Medicine and Surgery, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
8. Department of Gastroenterology, Division of Surgery, University of Sao Paulo, Sao Paulo, Brazil
9. Department of Medicine, Temple University, Philadelphia, Pennsylvania, USA
10. Institute of Image-Guided Surgery, Strasbourg, France; Interventional Endoscopy and Foregut Surgery, Oregon Health Science University, Portland, Oregon, USA
11. Division of Gastroenterology and Hepatology, Stanford Esophageal Multidisciplinary Program in Innovative Research Excellence (SEMPIRE), Stanford University, Stanford, California, USA
12. Division of Surgery, Padova University Hospital, Padova, Italy
13. Faculty of Medical Science, State University of Campinas, Campinas, São Paulo, Brazil
14. Digestive Surgery Division, University of São Paulo School of Medicine, São Paulo, Brazil
15. Digestive Endoscopy Unit, A. Gemelli Hospital, Catholic University, Rome, Italy
16. Department of Surgery, Northwestern University, Chicago, Illinois, USA
17. Department of Surgery, Brigham and Women's Hospital and Boston VA Healthcare System, Harvard Medical School, Boston, Massachusetts, USA
18. Department of Surgery, AGAPLESION-Markus-Krankenhaus, Frankfurt, Germany
19. Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
20. Department of Surgery, School of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
21. Division of Gastroenterology, Washington University School of Medicine, St Louis, Missouri, USA
22. Department of Surgery, School of Medicine, Federal University of São Paulo, São Paulo, Brazil
23. Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, The University of Adelaide, Adelaide, Australia
24. Department of Medicine, Kurokawa Hospital, Taiwa, Kurokawa, Miyagi, Japan
25. Esophageal and Lung Institute, Allegheny Health Network Cancer Institute, Pittsburgh, Pennsylvania, USA
26. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
27. Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
28. Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
29. Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
30. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico; Department of Pathophysiology and Transplantation; Università degli Studi, Milan, Italy
31. Institute for Image Guided Surgery IHU-Strasbourg, Strasbourg, France
32. Department of Clinical Medicine and Surgery, "Federico II" University of Naples, Naples, Italy
33. Department of Surgery, Hospital Alemán of Buenos Aires, Buenos Aires, Argentina
34. Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
35. Department of Surgery, University of Washington School of Medicine, Seattle, Washington, USA
36. Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, Arizona, USA
37. Department of Pediatric Surgery, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
38. Department of Surgery, Flinders University, Adelaide, Australia
39. Department of Gastroenterology, University of Bordeaux, Bordeaux, France
40. ECD Solutions, Atlanta, Georgia, USA
41. ALMA (Association of patients with achalasia, ONLUS), Naples, Italy
42. Department of Thoracic Surgery Virginia Mason Medical Center, Seattle, Washington, USA