Figure 1. Flowchart illustration of the inclusion process of the COPSAC2000 cohort, and the follow-up visits until the 18-year follow-up visit. Created in Biorender.
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.