"#PubMed Update: Proximity Search Now Available in PubMed" https://www.nlm.nih.gov/pubs/techbull/nd22/nd22_pubmed_proximity_search_available.html

To create a proximity search in PubMed, enter terms using the following format:

"search terms"[field:~N]

Search terms = Two or more words enclosed in double quotes.
Field = The search field tag for the [Title] or [Title/Abstract] fields.
N = The maximum number of words that may appear between your search terms.

#ncbi #eutils