curl --request POST \
  --url https://api.anysite.io/api/pubmed/articles/references \
  --header 'Content-Type: application/json' \
  --header 'access-token: <api-key>' \
  --data '
{
  "id": "<string>",
  "count": 2,
  "timeout": 300
}
'

[
  {
    "pmid": "<string>",
    "@type": "@pubmed_citation",
    "doi": "<string>",
    "title": "",
    "author_string": "<string>",
    "last_author": "<string>",
    "journal": "<string>",
    "pub_year": 123,
    "volume": "<string>",
    "issue": "<string>",
    "pages": "<string>",
    "pub_types": [],
    "pmc_ref_count": 0,
    "web_url": ""
  }
]