1. Department of Neurosurgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
2. Department of Radiodiagnosis, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
3. Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.