1. College of Osteopathic Medicine, Kansas City University, Kansas City, MO 64106, USA
2. Department of Neurological Surgery, Riverside University Health System, Moreno Valley, CA 92501, USA
3. Northeast Ohio Medical University, Rootstown, OH 44272, USA
4. Lake Erie College of Osteopathic Medicine, Erie, PA 16509, USA
5. Philadelphia College of Osteopathic Medicine, Moultrie, GA 31768, USA
6. Department of Neurological Surgery, Lenox Hill Hospital, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, NY 11030, USA