Define a PubMed class object for containing a PubMed article citation

Value

A PubMed-class object with a list of three data frames

Details

A helper class for PubMed

Slots

pubinfo

a data.frame containing publication title, journal, DOI, month, year

authors

a data.frame containing authors' first names, last names, and initials

affiliations

a data.frame containing author affiliations