1. Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke (NINDS), Bethesda, Maryland, United States
2. Department of Neurosurgery, Houston Methodist, Houston, Texas, United States
3. Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut, United States
4. Department of Rehabilitation Medicine, Speech-Language Pathology Section, National Institutes of Health Clinical Center, Bethesda, Maryland, United States
5. National Institute on Deafness and Other Communication Disorders, Bethesda, Maryland, United States
6. Clinical Trials Unit, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland, United States
7. National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States
8. Neurosurgery Unit for Pituitary and Inheritable Diseases, National Institute of Neurological Diseases and Stroke, Bethesda, Maryland, United States