Example: Create URLs following the pattern: https://www.goodmedical.org/links/record/pmidlookup?view=reprint&pmid=[PMID of the record]
<Base>https://www.goodmedical.org/links/record/</Base>
<Rule>pmidlookup?view=reprint&pmid=&lo.id;</Rule>

From: Information for Full-Text Providers

Cover of LinkOut Help
LinkOut Help [Internet].

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.