1. Department of Neurosurgery, N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia,
2. Department of Neurosurgery, Baptist Hospital of Miami, Miami Neuroscience Institute, Miami, Florida, United States,
3. Department of Radiation therapy and Radiosurgery, N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia.
4. Gamma Knife Center, N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia.