1. JPN Apex Trauma Center and Neurosciences Center, Ansari Nagar, India.
2. Department of Surgery, University of Michigan, Ann Arbor, Michigan.
3. Department of Biostatistics, University of Michigan, Ann Arbor, Michigan.
4. Department of Surgical Disciplines All India Institute of Medical Sciences, Ansari Nagar, India.
5. Departments of Neurosurgery and Neurology, University of Michigan, Ann Arbor, Michigan.