1. A. Kumar, MD, DA, Department of Anaesthesiology and Critical Care, University College of Medical Sciences and G.T.B. Hospital, Dilshad Garden Delhi‐11095, India.
2. R. Chawla, MD, Department of Anaesthesiology and Critical Care, University College of Medical Sciences and G.T.B. Hospital, Dilshad Garden Delhi‐11095, India.
3. S. Ahuja, MD, DA, Lecturers, Department of Anaesthesiology and Critical Care, University College of Medical Sciences and G.T.B. Hospital, Dilshad Garden Delhi‐11095, India.
4. K.K. Girdhar, MD, Specialist, Department of Anaesthesiology and Critical Care, University College of Medical Sciences and G.T.B. Hospital, Dilshad Garden Delhi‐11095, India.
5. A. Bhattacharya, MD, DA, Professor and Head of the Department, Department of Anaesthesiology and Critical Care, University College of Medical Sciences and G.T.B. Hospital, Dilshad Garden Delhi‐11095, India.