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学科
- National Institutes of Health (U.S.)[remove]3
- National Institutes of Health (U.S.). PubMed Central2
- Association of Research Libraries.1
- Bibliometrics.1
- Clinical and Translational Science Awards (Program)1
- Creative Commons (Organization)1
- Database searching.1
- Open access 1
- SPARC (Organization)1
- Scholarly electronic publishing.1