Rani, H. L. B., Rao, J. S. S. and Vaishnavi, G. (2022) “Comparative study of intrathecal tramadol and fentanyl as adjuvants in lower abdominal surgeries”, ScienceRise: Medical Science, (3(48), pp. 27–33. doi: 10.15587/2519-4798.2022.257524.