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.
Figure 1. Cumulative incidence of reoperation. Gray solid line, recurrent operation; gray dashed line, recurrent operation, lower 95% confidence interval. Black solid line, primary operation; black dashed line, primary operation, upper 95% confidence interval.
