Roberto González, Cardiovascular Center, Regional Clinical Hospital of Concepción, ”Dr. Guillermo Grant Benavente”; Department of Surgery, Faculty of Medicine, University of Concepción; Concepción, Chile
Héctor Molina, Department of Surgery, Faculty of Medicine, University of Concepción, Concepción, Chile
María García-Huidobro, Department of Surgery, Faculty of Medicine, University of Concepción; Surgery Service, Regional Clinical Hospital of Concepción, ”Dr. Guillermo Grant Benavente”, Concepción, Chile
Patricio Stevens, Department of Surgery, Faculty of Medicine, University of Concepción; Surgery Service, Regional Clinical Hospital of Concepción, ”Dr. Guillermo Grant Benavente”, Concepción, Chile
Andrés Jadue, Cardiovascular Center, Regional Clinical Hospital of Concepción, ”Dr. Guillermo Grant Benavente", Concepción, Chile
Alejandra Riquelme, Department of General Surgery, Faculty of Medicine, University of Concepción, Concepción, Chile
Javier Torres, Department of General Surgery, Faculty of Medicine, University of Concepción, Concepción, Chile
Sebastián Barra, School of Medicine, Faculty of Medicine, University of Concepción, Concepción, Chile
Felipe Alarcón, School of Medicine, Faculty of Medicine, University of Concepción, Concepción, Chile
Eduardo Fasce, Department of Medical Education, Faculty of Medicine, University of Concepción, Concepción, Chile