Cambridge Chemical Database (NCI)

    doi_prefix:10.3406 release_type:article

    193,346+ entities

    should be 'dataset' not 'article'

    datacite importer

Frontiers

    Frontiers non-PDF abstracts, which have DOIs like `10.3389/conf.*`. Should
    crawl these, but `release_type` should be... `abstract`? There are at least
    18,743 of these. Should be fixed in both crossref-bot, then a retro-active
    cleanup.