1. Department of Anaesthesiology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed to be University), Pondicherry, India
2. Department of Anaesthesiology, Kanyakumari Government Medical College, Nagercoil, Tamil Nadu, India
3. Department of Anaesthesia and Critical Care, Medical Trust Hospital, Ernakulam, Kerala, India