1. Department of Pediatric Surgery, Hospital San Vicente Fundación, Medellín, Colombia.
2. Department of Pediatric Surgery, Hospital Erasmo Meoz, Cúcuta, Colombia.
3. Department of General Surgery, Universidad EL Bosque, Bogotá, Colombia.
4. Department of General Surgery, Jose Felix Patiño, Fundación Santa fé De Bogotá, Bogotá, Colombia.
5. Department of General Pediatric Surgery, Hospital Universitario Clinica San Rafael, Bogotá, Colombia.
6. Department of Pediatric Surgery, Hospital La Misericordia, Bogotá, Colombia.
7. Registered Nurse, Morton College, Cicero, Illinois, USA.