Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Editorial
. 2008 Apr 2;100(7):451-2.
doi: 10.1093/jnci/djn074. Epub 2008 Mar 25.

Should observational studies be a thing of the past?

Kathleen I Pritchard
Editorial

Should observational studies be a thing of the past?

Kathleen I Pritchard. J Natl Cancer Inst. .
No abstract available

PubMed Disclaimer

Comment in

Comment on

MeSH terms