1. Department of Integrated Surgical and Diagnostic Sciences, University of Genoa, IRCCS Ospedale Policlinico San Martino , Genoa , Italy
2. Department of Surgical Science, University of Cagliari , Cagliari , Italy
3. Department of General Surgery, Centro Hospitalar Póvoa de Varzim-Vila do Conde , Póvoa de Varzim , Portugal
4. General Surgery Department, Azienda ULSS2 ‘Trevigiana’, Hospital Vittorio Veneto, Treviso , Italy
5. Department of General Surgery, ASST Spedali Civili Brescia PO, Montichiari , Brescia , Italy
6. Department of General Surgery, San Valentino Hospital , Montebelluna, Treviso , Italy
7. Faculty of Applied Informatics, Tomas Bata University in Zlín , Zlín , Czech Republic
8. Department of General Surgery, RCCS Ospedale Galeazzi-Sant’Ambrogio, University of Milan , Milan , Italy
9. Department of Surgery, Papageorgiou General Hospital , Thessaloniki , Greece
10. Department of Surgery, University Hospital Grenoble-Alpes , France
11. Department of General and Hepatobiliary Surgery and Liver Transplantation Service, University Hospital Medical School , Ghent , Belgium
12. Amsterdam UMC, University of Amsterdam, Department of Surgery , Amsterdam , the Netherlands
13. Department of Abdominal Wall Surgery, University of Insubria, Ospedale Galeazzi Sant’ Ambrogio , Milan , Italy
14. Department of Surgery, York and Scarborough Teaching Hospitals NHS Foundation Trust , York , UK
15. Digestive Disease Centre, Bispebjerg University Hospital , Copenhagen , Denmark
16. Department of Clinical Science, Intervention and Technology, Karolinska Institutet , Stockholm , Sweden
17. Department of Surgery, Enköping Hospital , Enköping , Sweden
18. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg , Göteborg , Sweden
19. Department of Visceral, Vascular and Thoracic Surgery, Cantonal Hospital Olten , Olten , Switzerland
20. General Surgery Unit, Centro Hospitalar Vila Nova de Gaia/Espinho , Porto , Portugal
21. General Surgery Unit, Medical Faculty Sigmund Freud Private University , Vienna , Austria
22. Department of Traumatology, University Hospital, Oslo University Hospital Ullevål , Oslo , Norway
23. Grupo de Investigación de Pared Abdominal Compleja, Universidad Francisco de Vitoria Hospital Universitario del Henares Carretera Pozuelo-Majadahonda , Madrid , Spain
24. Hernia Istanbul®, Comprehensive Hernia Centre , Istanbul , Turkey
25. General Surgery Unit, Hospital Universitario Fundación Alcorcón, Rey Juan Carlos University , Alcorcón , Spain
26. Third Department of Surgery, First Medical Faculty of Charles University, Motol University Hospital , Prague , Czech Republic
27. General Surgery Department, Uzhhorod City Central Clinical Hospital, Uzhhorod, National University Uzhhorod , Ukraine
28. Department of General and Endocrine Surgery, Lviv Regional Clinical Hospital, Lviv Danylo Halytsky National Medical University , Lviv , Ukraine
29. Abdominal Wall Surgery Unit, University Hospital Vall d´Hebrón , Barcelona , Spain
30. Universidad Autónoma de Barcelona (UAB) , Barcelona , Spain
31. Abdominal Wall Unit, Department of General Surgery, Local Health Unit of Castel Branco , Castel Branco , Portugal
32. University of Natural Sciences and Humanities in Siedlce , Siedlce, Masovian Voivodeship , Poland
33. Department of Abdominal Wall Surgery, AZ Maria Middelares , Ghent , Belgium
34. Department of General Surgery, Coimbra University Hospital, Coimbra , Portugal
35. Department of General and Emergency Surgery, Università Politecnica delle Marche , Ancona , Italy
36. Department of Surgery, Skane University Hospital , Malmö , Sweden
37. Department for Clinical Sciences Malmö, Lund University , Malmö , Sweden
38. General Surgery Unit, Civil Hospital of Baggiovara Azienda Ospedaliero–Universitaria di Modena , Modena , Italy
39. Department of General Surgery, Life Memorial Hospital—Medlife Bucharest , Romania
40. University of Reims Champagne Ardenne, France, Unit of Visceral Surgery, Robert Debre University Hospital , Reims , France
41. Department of Clinical Sciences, Lund University , Malmö , Sweden
42. Sheba Medical Centre, University of Tel Aviv , Tel Aviv , Israel
43. Department of General and Digestive Surgery, Virgen del Rocío University Hospital , Seville , Spain
44. Department of Surgery, OLVG Hospital Amsterdam , Amsterdam , the Netherlands
45. Department of General Surgery, Salford Royal Hospital , Salford , UK
46. Department of Gastrointestinal Surgery, Royal Devon and Exeter Hospital, Exeter , UK
47. General and Colorectal Surgery, Manchester Royal Infirmary, Manchester Foundation Trust , Manchester , UK
48. First Surgical Unit, Hygeia Hospital , Athens , Greece
49. Department of Surgery, Aretaieio University Hospital , Athens , Greece
50. Department of General Surgery, University Hospital of Wales , Cardiff , UK
51. Abdominal Centre, Helsinki University Hospital, Helsinki University , Helsinki , Finland
52. Department of General and Visceral Surgery, Agaplesion Elisabethenstift, Darmstadt , Germany
53. Department of General Surgery, Spire Murrayfield Hospital , Edinburgh , UK