def make_pubmed_abstract_group(pmids: Iterable[Union[str, int]]) -> Iterable[str]:
for pmid in set(pmids):<EOL><INDENT>yield '<STR_LIT>'<EOL>res = requests.get(title_url_fmt.format(pmid))<EOL>title = res.content.decode('<STR_LIT:utf-8>').strip()<EOL>yield '<STR_LIT>'.format(title, pmid)<EOL>res = requests.get(abstract_url_fmt.format(pmid))<EOL>abstract = res.content.decode('<STR_LIT:utf-8>').strip()<EOL>yield '<STR_LIT>'.format(abstract)<EOL>yield '<STR_LIT>'<EOL><DEDENT>
Build a skeleton for the citations' statements.

    :param pmids: A list of PubMed identifiers
    :return: An iterator over the lines of the citation section