1. Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark2Danish Hernia Database, Copenhagen, Denmark
2. Danish Hernia Database, Copenhagen, Denmark3Department of Gastroenterology, Surgical Section, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
3. Danish Hernia Database, Copenhagen, Denmark4Section of Surgical Pathophysiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
4. Danish Hernia Database, Copenhagen, Denmark5Department of Surgery, Aarhus University Hospital, University of Aarhus, Aarhus, Denmark