1. Chief of Department of General Surgery, Hospital San Francisco de Quito-IESS, Quito, Ecuador
2. Department of General Surgery, Hospital IESS Quito Sur, Quito, Ecuador
3. Department of General Surgery, Hospital Angeles Acoxpa, Cuidad de México, México
4. Department of General Surgery, Hospital San Francisco de Quito-IESS, Quito, Ecuador
5. PGY3 Resident General Surgery, P.U.C.E, Quito, Ecuador