From: Is identification and dissection of the external laryngeal nerve necessary during thyroidectomy? A prospective study
Subgroups
Number of studies (number of nerves)
Type I
Type II
Type III
All the groups
7 (500)
51%
34%
15%
Peroperative
3 (381)
64%
16%
20%
Cadaverous
4 (119)
37,5%
50%
12,5%