1. Medical and Surgical Research Center, Future Surgeons Chapter, Colombian Surgery Association, Bogotá
2. School of Medicine, Corporación Universitaria Rafael Núñez, Cartagena
3. School of Medicine, Universidad del Magdalena, Santa Marta
4. School of Medicine, Universidad de Santander, Bucaramanga, Colombia
5. International Coalition on Surgical Research, Universidad Nacional Autónoma de Nicaragua, Managua, Nicaragua