I have 35 years of experience, and specialize in the field of neurosurgery with specific knowledge in the areas of brain, spine and peripheral nerve. I have published on such topics as brain trauma, spinal disorders and brain tumors. I have testified 40 times on topics such as brain tumor, brain trauma and spinal disorders.I assisted in founding anatomy workshops where thousands of surgeons and students from all over the world have come to learn the latest techniques of surgery.