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 IIa
Type IIb
All the groups
33 (6098)
39%
42%
19%
Peroperative
24 (5702)
35%
44%
21%
Cadaverous
9 (396)
50,5%
34,5%
15%