DOI stands for Document Object Identifier. This is a unique identifier that is assigned to an online journal article, online book or online book chapter. Most publishers assign these to their online content. A DOI can take you directly to an online resource, but JMU Libraries does not always have access at a publisher site.
Example DOI: 10.3390/ijms21031053
PMID is a unique identifier used in the PubMed database and can be used to look up abstracts in PubMed.
Example PMID: 32033398
Look for this button to find a link to full-text online, if available.
Look for this button to request an electronic copy of an article. Delivery is usually within 1 to 2 days if the journal is available at JMU, but may take longer if it must be ordered from another library.