Fetch abstract given Scopus ID
scopus_req_abstract(
  sid,
  endpoint = "https://api.elsevier.com/content/abstract/scopus_id/",
  timeout = 10L
)see https://dev.elsevier.com/documentation/AbstractRetrievalAPI.wadl
if (FALSE) { # \dontrun{
  scopus_req_abstract("SCOPUS_ID:85140569271")
} # }