1. Department of Neurological Surgery and Rosa Ella Burkhardt Brain Tumor & Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland;
2. Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio;
3. Department of Neurosurgery, Mayo Clinic, Jacksonville, Florida;
4. Department of Endocrinology, Diabetes and Metabolism, Cleveland Clinic, Cleveland; and
5. Department of Otolaryngology–Head & Neck Surgery, Head and Neck Institute, Cleveland Clinic, Cleveland, Ohio