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.
The impact factor of a number 1 ranked journal within 69 (sub)disciplines (such as ‘Cardiac & Cardiovascular Systems’ or ‘Biochemistry & Molecular Biology’) in life and medical sciences is correlated with the total number of journals within that category. Data are taken from ISI Journal Citation Reports® 1999 (Thomson Corporation). There are large differences between (sub)disciplines. Compiled from reference 15.
