Figure 2.
Patient distribution according to age, in months. In black, the time in months taken to reach spontaneous improvement is shown. In grey, the time in months until surgery is shown.
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.