Figure 1.
Analysis of preoperative and operative staging showed five patients to have preoperatively undetected cancer (four duodenal and one ampullary; Pearson's kappa correlation coefficient: 0.518 [P < 0.001])
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.