Sakamoto K, Ozawa H, Shimanuki M, Kida A, et al. Trapezius muscle branch of the spinal accessory nerve without penetrating the
sternocleidomastoid muscle as a pitfall in neck dissection: prevalence in a
Japanese institution and a protocol for the prevention of iatrogenic injury. Acta Otolaryngol 2021 Aug 12:1-5. doi: 10.1080/00016489.2021.1954688.
PMID: 34384316