1. Unit of Pediatric Neurology Faculty of Medicine Universidad del Desarrollo, Clinica Alemana de Santiago Vitacura Chile
2. Unit of Neurophysiology Neurosurgery Institute Dr. Alfonso Asenjo Santiago Chile
3. Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna Universidad de Chile Santiago Chile
4. Faculty of Medicine Universidad Autonoma de Chile Santiago Chile
5. Faculty of Medicine Universidad de Chile Santiago Chile
6. Unit of Clinical Research Clinica Alemana de Santiago Vitacura Chile