| Affiliation: | 1.University of California San Francisco,San Francisco,USA;2.Department of Surgery,Hospital Universitario Mayor - Mederi,Bogota,Colombia;3.Department of Surgery,Mulago Hospital,Kampala,Uganda;4.Department of Surgery,University of Paris,Paris,France;5.Department of Visceral and General Surgery,University of Ulm,Ulm,Germany;6.University of Malaya,Kuala Lumpur,Malaysia;7.Department of Surgery,Westmead Hospital,Sydney,Australia;8.Department of Medicine,University of North Carolina at Chapel Hill,Chapel Hill,USA |
