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.
Percentage of published records by publication type.
| Publication type | Records (n=2607), n (%) |
| Article | 1858 (71.27) |
| Meeting abstract | 388 (14.84) |
| Review | 217 (8.32) |
| Editorial material | 97 (3.72) |
| Correction | 29 (1.11) |
| Letter | 13 (0.54) |
| News item | 5 (0.19) |
