Grant Number [GR]
Research grant numbers, contract numbers, or both that designates financial support by:
For Public Health Services agencies, the number is followed by the Institute acronym; followed by the agency’s hierarchical structure from lower to higher entity, when known; and then followed by the country name.
For other funding organizations, the number is followed by the name of the organization; followed by the country name.
The four pieces of the grant number (e.g., LM05545 – number; LM – acronym; NLM NIH HHS – parts of, or the entire string of the agency’s hierarchical structure; and funding country) are each individually searchable using the [gr] tag.
PubMed’s online Help links to a Web page detailing Grant Number Information Found in the GR Field in MEDLINE/PubMed.