WWW-Search-PubMed
(1.004)
It was incredibly easy to get started with WWW::Search::PubMed.
Users can run any search that can be run on PubMed, but the only fields that can be retrieved are title, PMID, URL, abstract, date, and description (i.e. authors + journal, concatenated).
I found it useful to glance back at the PubMed search field descriptions and tags while formulating queries.