Preprints are articles which have not been peer-reviewed from various preprint servers and open research platforms such as bioRxiv, ChemRxiv, PeerJ Preprints and F1000.

Prefix
ppr
Keywords
bibliometrics preprints publishing
Links
Homepage
Contact
Missing Contact
Pattern for Local Unique Identifiers

Local identifiers in Europe PMC Preprints should match this regular expression:
^PPR\d+$

Example Local Unique Identifier
PPR103739   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Europe PMC Preprints should match this regular expression:
^ppr:PPR\d+$

Example CURIE
ppr:PPR103739
References
GitHub PR https://github.com/bridgedb/tiwid/pull/21
Contributors
Providers

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier PPR103739 is used to demonstrate the providers available for Europe PMC Preprints. A guide for curating additional providers can be found here.

Name Metaprefix URI
Europe PMC Preprints ppr https://europepmc.org/article/ppr/PPR103739
Bioregistry bioregistry https://bioregistry.io/ppr:PPR103739