Holds information about a Medline citation.

Members: medline_id Medline ID. pmid Pubmed ID.

date_created Tuple of (year, month, day, season, medline date). date_completed Tuple of (year, month, day, season, medline date). date_revised Tuple of (year, month, day, season, medline date).

abstract Tuple of (text, copyright info). journal Tuple of (ISSN, volume, issue, date). article_title Title of article. pagination Tuple of (start, end, medline pagination). accession_numbers List of accession numbers. affiliation Affiliation. author_list List of authors. languages List of languages databank_list List of tuples (name, accession numbers). grant_list List of tuples (grant id, acronym, agency) publication_type_list List of publication types. vernacular_title Vernacular title.

medline_journal_info Tuple of (country, medline ta, medline code, nlm id) chemical_list List of (CAS registry number, name). citation_subsets List of citation subsets. comments_corrections XXX not implemented gene_symbol_list List of gene symbols. mesh_heading_list List of (descriptor, subheadings). number_of_references Number of references (int). personal_name_subject_list List of personal names.