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.
Distribution of AF-AFP-MoM values in 56 twin pregnancies. The higher value was assigned to one twin, the lower to the other twin. They were denominated as 1st and 2nd twin for this chart and not as they were assigned due to sonographic data.
