1 Department of Onco-Anaesthesia, Pain and Palliative Medicine, Basavatarakam Indo-American Cancer Hospital and Research Institute, Hyderabad, India, 500034.
2 Department of Onco-Anaesthesia, Pain and Palliative Medicine, Basavatarakam Indo-American Cancer Hospital and Research Institute, Hyderabad, India, 500034. [email protected].