Hernia, Ventral

• Malmö University Hospital, Department of Surgery — Malmö, Sweden
• Arvika Hospital, Department of Surgery — Arvika, Sweden
• Helsingborg Hospital, Department of Surgery — Helsingborg, Sweden
• Lund University Hospital, Department of Surgery — Lund, Sweden

• Hospital Infanta Elena — Huelva, Spain

Not specified

• Sutter Medical Group GNS — Sacramento, California, United States
• Sacred Heart Health System, Inc. — Pensacola, Florida, United States
• RUSH Univeristy Medical Center — Chicago, Illinois, United States
• Associated Surgical Group — Peoria, Illinois, United States

• Capital Region Hospital — Jefferson City, Missouri, United States
• Washington University School of Medicine / Dept of Surgery — St Louis, Missouri, United States
• Montefiore Medical Center — The Bronx, New York, United States
• First Health Moore Regional Hospital — Pinehurst, North Carolina, United States

• VA Boston Healthcare System, Boston — Boston, Massachusetts, United States

• Division of Plastic and Reconstructive Surgery, Northwestern.edu — Chicago, Illinois, United States

• Ziekenhuisgroep Twente — Almelo, Netherlands

• Mansoura University Hospital — Al Mansurah, Dakahlia Governorate, Egypt
• Al Mansurah, Egypt