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Hemlata, H.; Agarwal, J.; Singh, D.; Verma, S. . Dexmedetomidine and Fentanyl As an Adjuvant to Intrathecal Isobaric Ropivacaine for Surgery of Fracture Neck Femur; A Randomized, Double-Blind Comparison. J Cell Mol Anesth 2022, 8, 22-30.