| Affiliation: | 2. Department of Surgery, University of British Columbia, Vancouver, Canada;3. Department of Surgery, Brigham and Women''s Hospital/Harvard Medical School, Boston, Massachusetts;4. Department of Surgery, University of Rochester, Rochester, New York;2. Department of Epidemiology, University Medical Center, Groningen, The Netherlands;3. Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands;4. Leeuwarden Institute for Minimally Invasive Surgery (LIMIS), The Netherlands;5. Nuffield Department of Surgical Sciences, Oxford, United Kingdom |
