From: Evaluation of the profile of alopecia areata and the prevalence of thyroid function test abnormalities and serum autoantibodies in Iranian patients
Anti SM Ab/Age group
Positive
Negative
n
%
5–14
0
21
17
15–24
6
4
38
31
25–34
26
21.1
35–44
>44
11
9
Total
5
4.8
118
95.1