Non-invasive recording during intra-operative neuro-monitoring in thyroid surgery: omitting surface electrode and oversize endotracheal tube

I have read with interest on the article by Wu et al. “Transcutaneous Recording during Intraoperative Neuromonitoring in Thyroid Surgery” published in Thyroid (1). The article is well written and innovative. It introduced and test the feasibility of a transcutaneous electrode on recording intra-operative neuro-monitoring (IONM) signal in an in-vivo study.