Srimanta K Haldar1, Anshuman Sarkar2, Aditi Gupta2, Gaurav Aggarwal3. 1. Shaikh Bazar, Near Urdu Training School, P.O: Tulasipur, Cuttack, Odisha, India. 2. Department of Anaesthesiology, Critical Care and Pain, Tata Medical Centre, Kolkata, West Bengal, India. 3. Department of Uro-oncology, Tata Medical Center, Kolkata, West Bengal, India.