1. Topiwala National Medical College, Mumbai, India;
2. Bowers Neurosurgical Frailty and Outcomes Data Science Lab, Sandy, Utah;
3. Georgetown University School of Medicine, Washington, DC;
4. Department of Neurological Surgery, University of California, San Francisco, California;
5. Tulane University School of Medicine, New Orleans, Louisiana;
6. Shiraz University of Medical Sciences, Student Research Committee, Shiraz, Iran; and
7. Department of Neurosurgery, University of California, Los Angeles, California