Table 4.

Leonhard et al. research comparison.

Type	Leonhard et al., 2016 [71]	Leonhard et al., 2017 [72]
Cadavers examined	65	95
Classic anatomy	47.7%	33.7%
Single piercing	38.5%	52.7%
Multiple piercing	3.1%	4.2%
C5 piercing	3.1%	3.2%
Anterior	3.1%	4.2%