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" Preemptive peritonsillar infiltration with bupivacaine in combination with tramadol improves pediatric posttonsillectomy pain better than using bupivacaine or tramadol alone: A randomized, placebo- controlled, double blind clinical trial "
/مجتبی سلطانی
; Azim Honarmand, Mohammadreza Safavi
; Khosrou Naghibi
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