OLDMEDLINE Content Continues to Extend Back in Time

On December 24, 2007, ????? citations from the 1949 Current List of Medical Literature (CLML) were added to the OLDMEDLINE subset in PubMed®. These citations have not yet been mapped to current MeSH®. To search PubMed for citations originating from OLDMEDLINE use jsubsetom. For additional information about OLDMEDLINE, see: http://www.nlm.nih.gov/databases/databases_oldmedline.html.

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