Similar Articles
When looking at the abstract page of a record, you may see that PubMed suggests Similar Articles to the article that you are looking at.
PubMed uses a word-weighted algorithm to compare MeSH headings and words from the Title and Abstract of each citation in PubMed. The best matches found by this algorithm for each citation are then stored and recommended as Similar Articles.
Some citations will not yet have Similar Articles links because they have not yet gone through the algorithm process. For more information see PubMed's detailed guide to how Similar Articles are computed.