Figure 3.
Studies included in the systematic review categorized by sub-type of male infertility; NOA: non-obstructive azoospermia; TZ: teratozoospermia; AZ: asthenozoospermia; OZ: oligozoospermia.
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.