Harmonic scalpel impact on blood loss and operating time in major head and neck surgery: a randomized clinical trial.

J Otolaryngol Head Neck Surg · 2016 · PMC5100249 · PMID 27821144

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highly significantno p-value reported

These authors found a highly significant decrease in blood loss in the HS group, but did not differentiate between the oral and oropharyngeal sub-groups.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.