IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-11-31981 Original Research Paper Comparative Study of Tramadol with That of Butorphanol for the Control of Shivering in Patients Undergoing Neuraxial Blockade Prabhat Kumar Choudhary Dr. Dr. Namita Saraswat Dr. November 2020 9 11 01 02