1. Department of Surgery, Aberdeen Royal Infirmary, Aberdeen, Scotland, UK
2. Department of Medicine, Skagit Valley Hospital, Mount Vernon, WA, USA
3. Beverly Hills Hernia Center, Beverly Hills, CA, USA
4. Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
5. Department of Radiology, Beth Israel Lahey Health, Boston, MA, USA