1. Department of Neurological Surgery, Houston Methodist Hospital, Houston, Texas, USA;
2. Department of Neurological Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA;
3. The Ohio State University College of Medicine, Columbus, Ohio, USA;
4. Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA;
5. Department of Endocrinology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA;
6. Department of Neurological Surgery, Ain Shams University, Cairo, Egypt;
7. Department of Radiology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA;
8. Department of Otolaryngology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA