1. Department of Anaesthesiology and critical care, JIPMER, Pondicherry, India;
2. In charge Neuroanaesthesia division, Department of Anaesthesiology and critical care, JIPMER, Pondicherry, India;
3. Fellow in Neuroanaesthesiology, JIPMER, Pondicherry, India;
4. Department of Anaesthesiology and critical care, JIPMER, Pondicherry, India