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.
Logistic Regression Analysis of Trimester-Specific Biomarkers of Lead Exposure, Cord Blood Lead, and Odds of Delivering Prematurely, Mexico City, Mexico, 1997-1999. Dots indicate the mean and 95%CI for the odds ratios of delivering prematurely in relation to the trimester-specific biomarkers of lead exposure and cord blood lead.
