1. Chief Resident, Department of Anaesthesiology, The Aga Khan University Hospital, Stadium Road, PO Box 3500, Karachi 74800, Pakistan,
2. Instructor, Department of Anaesthesiology, The Aga Khan University Hospital, Stadium Road, PO Box 3500, Karachi 74800, Pakistan,
3. Senior Instructor, Department of Anaesthesiology, The Aga Khan University Hospital, Stadium Road, PO Box 3500, Karachi 74800, Pakistan,
4. Professor and Chair, Department of Anaesthesiology, The Aga Khan University Hospital, Stadium Road, PO Box 3500, Karachi 74800, Pakistan