1. Multiple Sclerosis and Demyelinating Disorders Clinic National Institute of Neurology and Neurosurgery Mexico City Mexico
2. Neurology Department National Institute of Neurology and Neurosurgery Mexico City Mexico
3. Head of Neurodegenerative Diseases Clinic National Institute of Neurology and Neurosurgery Mexico City Mexico
4. Head of Neurology Department National Institute of Neurology and Neurosurgery Mexico City México