1. Department of Emergency Medicine, Institute of Neuroscience Kolkata, Kolkata, West Bengal, India
2. Department of Neurosurgery, Institute of Neuroscience Kolkata, Kolkata, West Bengal, India
3. Department of Neuropathology, Institute of Neuroscience Kolkata, Kolkata, West Bengal, India
4. Department of Neuroradiology, Institute of Neuroscience Kolkata, Kolkata, West Bengal, India