1. Department of Neurosurgery, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India,
2. Department of Orthopedic Surgery, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India,
3. College of Nursing, All India Institute of Medical Sciences, Deoghar, Jharkhand, India,
4. Department of Neuroanesthesia, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India,
5. Department of Neurointervention, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India.