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 2 Estimated shape of the association of PM10 for each lag with daily number of doctor's house calls for lower respiratory tract diseases (percentage increase in number of calls associated with a 10 μg/m3 increase in PM10). Dotted lines represent 95% CIs.
