1. Department of Neurosurgery; National Institute of Neurology and Neurosurgery; México City Mexico
2. Department of Neurosurgery; Medical College of Wisconsin; Neurosurgery Epilepsy Program; Children's Hospital of Wisconsin; Milwaukee Wisconsin U.S.A.
3. Department of Neurosurgery; Tokyo Metropolitan Neurological Hospital; Fuchu Japan
4. Neuroanatomy and Neurosurgery; Nova Esperança Medical School (FAMeNe); João Pessoa PB Brazil