An official website of the United States government
Here's how you know
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.
Process of literature selection for meta-analysis data. The process of identifying and selecting article resources for a meta-analysis study. Collected 3,802 related articles, then through the selection process, selected 86 articles that are available for data extraction.