FIGURE 3.
Contour maps of smoothed birth prevalence of oral clefts per 1000 live births in relation to maternal and paternal ages (years). (A) Cleft lip with or without cleft palate. (B) Cleft palate only.
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.