Licence restrictions on imported metadata
Are there any licence restrictions on metadata that has been imported from a third party? All of my metadata has come from NCBI PubMed and Crossref, if I export my library as a bibtex file who owns that data? Can I distribute the exported metadata? Obviously I would cite PubMed and Crossref as the sources of the original data.
https://www.nlm.nih.gov/databases/download/terms_and_conditions.html
https://github.com/CrossRef/rest-api-doc#metadata-license
Thanks!