1. Department of Anaesthesiology, Mahatma Gandhi Medical College and Research Institute, Karaikal, Puducherry, India
2. Department of Obstetrics and Gynaecology, ST Hospital and KRG Nursing Home, Kumbakonam, Tamil Nadu, India
3. Department of Anaesthesiology, Jawaharlal Institute of Postgraduate Medical Education and Research, Karaikal, Puducherry, India