1. Department of Surgery (DISC), University of Genoa , Genoa , Italy
2. Department of Anaesthesiology, University of Groningen, University Medical Centre Groningen , Groningen , The Netherlands
3. Department of Anaesthesiology, The Centre for Cancer and Organ Diseases, Copenhagen University Hospital Rigshospitalet , Copenhagen , Denmark
4. Department of Clinical Medicine, University of Copenhagen , Copenhagen , Denmark
5. Department of Surgery, Vittorio Veneto General Hospital , Vittorio Veneto , Italy
6. Department of Surgery, Rijnstate Hospital , Arnhem , The Netherlands
7. Department of Surgery, University Hospital Ghent , Ghent , Belgium
8. Department of Surgery, University Medical Centre Utrecht , Utrecht , The Netherlands
9. David Geffen School of Medicine at UCLA , Los Angeles, California , USA
10. Department of Surgery, Royal Infirmary of Edinburgh , Edinburgh , UK
11. Department of Surgery, Fakultní Nemocnice v Motole , Prague , Czech Republic
12. Department of Surgery, Universitat Ramon Llull , Barcelona , Spain
13. Department of Gastrointestinal and Hepatic Diseases, Copenhagen University Hospital–Herlev and Gentofte , Herlev , Denmark
14. Vivantes Hospital Berlin, Academic Teaching Hospital of Charité University Medicine , Berlin , Germany
15. Department of Surgery, Klinik Im Park, Zurich , Zurich , Switzerland
16. SolviMáx Centre of Excellence for Abdominal Wall and Groin Pain , Eindhoven , The Netherlands
17. Department of General Surgery, Máxima Medical Center , Veldhoven , The Netherlands
18. Department of Surgery, Hospital Universitari Vall d’Hebron , Barcelona , Spain
19. Department of Surgery, Hernia Center 3+CHIRURGEN , Berlin , Germany
20. Department of Surgery, KU Leuven–University Hospital Leuven , Leuven , Belgium
21. Department of Surgery, Skåne University Hospital , Malmö , Sweden
22. Department of Surgery, Universidad de Sevilla , Sevilla , Spain
23. Department of Surgery, Derriford Hospital Plymouth , Plymouth , UK
24. North Devon Comprehensive Hernia Centre, North Devon District Hospital, Royal Devon University Healthcare NHS Foundation Trust , Barnstaple , UK
25. Department of Surgery, Azienda Ospedaliero Universitaria di Cagliari , Cagliari , Italy
26. Department of Surgery, Gross-Sand Hospital Hamburg , Hamburg , Germany
27. Department of Surgery, Ospedale Civile di Montebelluna , Montebelluna , Italy
28. Westmead Clinical School, Sydney Medical School, University of Sydney , New Galles , Australia
29. Department of Surgery, Bodden-Kliniken Ribnitz-Damgarten GmbH , Ribnitz-Damgarten , Germany
30. Department of Surgery, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, P.M.B. , Kumasi, West Africa
31. Department of Surgery, Onze Lieve Vrouwe Gasthuis Hospital , Amsterdam , The Netherlands