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MEDLINE® 2019 Database Guide
Ovid MEDLINE® covers the international literature on biomedicine, including the allied health fields and the biological and physical sciences, humanities, and information science as they relate to medicine and health care. Information is indexed from approximately 5,600 journals published world-wide. Records start in the early 1800's and go all the way to our daily updates.
Ovid MEDLINE® is produced by the National Library of Medicine.
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Non MEDLINE Status Records
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The Ovid MEDLINE® database contains records with the following possible status besides MEDLINE: Publisher, In-Data-Review, In-Process and PubMed-not-MEDLINE records from NLM.
The Publisher records have recently been added to PubMed via electronic submission from a publisher, and are soon to proceed to the next stage, In-Process. This tag is also on citations received before late 2003 if they are from journals not indexed for MEDLINE, or from a journal that was accepted for MEDLINE after the citations' publication date. These citations bibliographic data have not been reviewed.
The In-Data-Review records have been submitted to NLM electronically by the publisher, and the journal title, date of publication and volume/issue (source data) are being checked.
The In-Process records are undergoing a citation level review; i.e., the author names, article title, and pagination are being checked.
The PubMed-not-MEDLINE records have undergone quality review but are not assigned MeSH headings because the cited item is not in scope for MEDLINE either by topic or by date of publication, or is from a non-MEDLINE journal. These records are constantly changing. PubMed-not-MEDLINE records will not be added to the Medline database.
Ovid receives records from NLM on a daily basis, however we are dependent upon NLM's update schedule.
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Segments and Years of Coverage
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The following Ovid MEDLINE segments are available to online users. Contact your local administrator to add or remove segments.
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Name
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Description
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Years of Coverage
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MED1
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Ovid MEDLINE®
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1946 to 1979
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MED2
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Ovid MEDLINE®
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1980 to 1987
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MED3
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Ovid MEDLINE®
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1988 to 1995
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MED4
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Ovid MEDLINE®
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1996 to 2003
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MED5
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Ovid MEDLINE®
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2004 to 2007
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MED6
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Ovid MEDLINE®
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2008 to 2009
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MED7
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Ovid MEDLINE®
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2010 to 2011
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MED8
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Ovid MEDLINE®
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2012
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MED9
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Ovid MEDLINE®
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2013
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MED10
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Ovid MEDLINE®
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2014
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MED11
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Ovid MEDLINE®
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2015
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MED12
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Ovid MEDLINE®
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2016
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MED13
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Ovid MEDLINE®
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2017 to 2018
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MEDALL
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Ovid MEDLINE® ALL
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1946 to Daily Update
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MDFC
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Ovid MEDLINE®
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1996 to Present with Weekly Update
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MDXC
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Ovid MEDLINE®
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1996 to Present with Daily & Weekly Update
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MEDB
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Ovid MEDLINE® without Revisions
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1946 to 1995
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MEDC
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Ovid MEDLINE® Revisions
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September 2019
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MEDC1
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Ovid MEDLINE® Revisions
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December 2018 to April 2019
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MEDC2
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Ovid MEDLINE® Revisions
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May 2019
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MEDC3
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Ovid MEDLINE® Revisions
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June 2019 to August 2019
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MEDCM
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Ovid MEDLINE® Revisions
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December 2018 to June 2019
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MEDF
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Ovid MEDLINE® without Revisions
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1996 to Present with Weekly Update
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MEDL
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Ovid MEDLINE®
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January 2019 to Weekly Update
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MEDP
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Ovid MEDLINE® Epub Ahead of Print
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Updated Daily
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MEDV
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Ovid MEDLINE® Versions
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All Versions with Weekly Update
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MEDW
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Ovid MEDLINE®
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2015 to Weekly Update
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MEDX
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Ovid MEDLINE® without Revisions
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1996 to Present with Daily Update
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MESD
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Ovid MEDLINE®
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1946 to Present with Daily Update
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MESX
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Ovid MEDLINE®
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Updated Daily
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MESZ
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Ovid MEDLINE®
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1946 to Present with Weekly Update
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MEZZ
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Ovid MEDLINE® without Revisions
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1946 to Present with Weekly Update
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OMES
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Ovid MEDLINE®
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1946 to Present with Daily Update
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OMME
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Ovid MEDLINE®
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1946 to Present with Weekly Update
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PMED
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Ovid MEDLINE® Practice Database
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2000
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PMEZ
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations and Daily
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1946 to Present
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PMFC
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations
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1996 to Daily Update
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PMOZ
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations and Daily
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1946 to Present
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POMM
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations
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1946 to Present
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PPEM
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Ovid MEDLINE® Epub Ahead of Print and In-Process & Other Non-Indexed Citations
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Updated Daily
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PPEZ
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily
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1946 to Present
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PPEZV
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations, Daily and Versions®
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1946 to Present with Daily & Weekly Update
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PPFC
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations
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1996 to Daily Update
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PPFF
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations without Revisions
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1996 to Present with Daily & Weekly Update
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PPMC
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily
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2015 to Present
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PPMW
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations and Daily - without Revisions
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2015 to Present
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PPMZ
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Ovid MEDLINE® and Epub Ahead of Print, In-Process & Other Non-Indexed Citations
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1946 to Present
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PREM
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Ovid MEDLINE® In-Process & Other Non-Indexed Citations
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2019 to Present
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PREM1
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Ovid MEDLINE® In-Process & Other Non-Indexed Citations
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1946 to 2016
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PREM2
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Ovid MEDLINE® In-Process & Other Non-Indexed Citations
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2017 to 2018
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PREW
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Ovid MEDLINE® In-Process & Other Non-Indexed Citations
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1946 to Present
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PRMF
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations without Revisions
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1996 to Present with Daily & Weekly Update
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PRMZ
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Ovid MEDLINE® and In-Process & Other Non-Indexed Citations
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1946 to Present
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The limit of databases that you can select for a multifile search session is based upon database segments rather than actual databases. The Ovid multifile segment limit is set at 120 to avoid impacting your search sessions. This database includes 24 segments.
This database is updated online daily, weekly and monthly.
