How Citations Get Into PubMed

• Records are either supplied electronically by publishers or created using scanning and Optical Character Recognition (OCR) at NLM. 
• Citations are immediately made available via PubMed.  All citations go through a quality control process, and citations from MEDLINE journals are indexed. 
• All citations display a status tag, which indicates their stage of processing. 

The next several screens explain the various status tags.

Publisher Supplied Citations

• Most PubMed citations are transmitted electronically to PubMed directly by publishers. This accelerated method of entering citations means that you have access to published articles very quickly.
  
  
• These citations have a PubMed Unique Identifier (PMID) and the status tag [PubMed - as supplied by publisher].

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