Fig. 4.
Longitudinal trajectories in total and proportion of genetic (A) and environmental (E) variance for the spatial factor, with and without full coupling with FEV1
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.