1. Department of Anaesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
2. Department of Neurosurgery, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
3. Department of Endocrinology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.