| Route of the external branch of the superior laryngeal nerve | Authors | ||
| Our study | N’guessan [1] | Page [3] | |
| Stuck to the external face of the constrictor of the pharynx | 82.4% | 75% | 80% |
| Adhering to the superior thyroid artery | 11.8% | 18.75% | 20% |
| Crossing the branches of the superior thyroid artery | 5.8% | 6.25% |
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