1. From the Department of Anaesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
2. Department of Anaesthesia and Intensive Care, ACC (Advanced Cardiac Centre), Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
3. Department of Cardiothoracic and Vascular Surgery, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.