Extract PubMed ID from elink_list object

Extract PubMed ID from an elink_list object.

Usage

# S3 method for elink_list
extract_pmid(x, no_result = "warning", ...)

Arguments

x

An elink_list object, generated by rentrez::entrez_link and it's derivatives (e.g. citedby_pmid) when by_id = TRUE .

no_result

The type of condition that should be signaled when no PubMed results exist in a response; one of "error", "warning" (default), "message" or "none".

...

Additional arguments passed on to extract_pmid.elink().

See also

Other extract_pmid_methods: extract_pmid.elink(), extract_pmid()