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.
Forest plots representing the odds ratio of surgery in the multivariate analysis for the global (A), CD (B), and UC (C) cohorts of patients. (D) Survival analysis of the time to surgery in immigrant vs. native patients. CD, Crohn's disease; UC, ulcerative colitis.
