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3. Analgesia nociception and hemodynamic changes during skull pin application for supratentorial craniotomies in patients receiving scalp block versuspin-site infiltration: A randomized controlled trial;Theerth;Saudi J Anaesth,2019
4. Comparison of intravenous labetalol and bupivacaine scalp block on the hemodynamic and entropy changes following skull pin application: A randomized, open label clinical trial;Bharne;Asian J Neurosurg,2016
5. Attenuation of hemodynamic response to skull pin head-holder insertion: Intravenous clonidine versus intravenous lignocaine infusion;Nanjundaswamy;Anesth Essays Res,2017