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.