2.4. Analysis.
Comparison 2 Periodontal treatment versus alternative periodontal treatment, Outcome 4 Perinatal mortality (including fetal and neonatal deaths up to the first 28 days after birth).
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.