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Zahid, F.; Munir Tarar, H.; Muhammad Tariq, M. T. INTRATHECAL TRAMADOL AS AN ADJUVANT IN SUBARACHNOID BLOCK TO PROLONG THE DURATION OF ANALGESIA: Tramadol As Adjuvant in Subarachnoid Block. Pak Armed Forces Med J 2017, 67 (4), 534-39.