Table I.
Distribution by decade of life.
| Age group | Number of cases | % |
|---|---|---|
| First decade | 54 | 50.5 |
| Second decade | 50 | 47.0 |
| Third decade | 2 | 2.0 |
| Fourth decade | 1 | 0.5 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.