1. Department of Global Health and Surgery, University of Washington, Seattle, Washington, USA
2. Division of Emergency Surgery, Hospital Nacional Guillermo Almenara, Lima, Peru
3. Department of Surgery, Hospital Nacional de la Policía, Lima, Peru
4. Department of Indiana University School of Medicine, Indianapolis, Indiana, USA
5. Department of Surgery, Hospital Rebagliati, Lima, Peru
6. Department of Surgery, Universidad Peruana Cayetano Heredia, Lima, Peru