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<TITLE>MEDLINE Logs 10 Millionth Journal Citation. NLM Technical Bulletin. Sep-Oct 1999</TITLE>
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<meta name="DC.Subject.Keyword" content="Editor's Note" />
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<meta name="DC.Subject.Keyword" content="ELHILL" />
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<meta name="DC.Subject.Keyword" content="Images From the History of Medicine" />
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<meta name="DC.Subject.Keyword" content="Indexing" />
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<meta name="DC.Subject.Keyword" content="Internet Grateful Med" />
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<meta name="DC.Subject.Keyword" content="MEDLINE" />
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<A HREF="/nlmhome.html"><IMG SRC="/pubs/techbull/tb_graphics/tbhead4.gif" BORDER="0" ALT = "NLM Technical Bulletin"></A>
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<H3><EM>NLM Technical Bulletin.</EM> 1999 September-October; 310</H3>
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<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="10">
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<CENTER><STRONG>In This Issue:</STRONG></CENTER>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_technote.html">Technical Notes</A> - e1
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</P>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_popline.html">Searching POPLINE on Internet Grateful Med</A> - e2
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</P>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_pubmed.html">Highlights of the New Beta Version of PubMed</A> - e3
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</P>
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<P>
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<img src="/pubs/techbull/tb_graphics/blutri.gif" alt="dot" height=10 width=10>MEDLINE Logs 10 Millionth Journal Citation - e4
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</P>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_training.html">NLM Online Training Program - 2000</A> - e5
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</P>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_ihm.html">Images from the History of Medicine</A> - e6
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</P>
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<P>
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<A HREF = "/pubs/techbull/so99/so99_elhill.html">Farewell to ELHILL</A> - e7
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<CENTER><STRONG><A HREF = "/pubs/techbull/new_index.html">Index</A></STRONG></CENTER>
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<TD VALIGN=TOP width=440>
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<CENTER><H2>MEDLINE Logs 10 Millionth<BR> Journal Citation</H2></CENTER>
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<P>
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<small>[Editor's note: The following article is reprinted in its entirety from the September 7,
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1999 issue of the <EM>NIH Record</EM>. This journal is available on the Web at
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<A HREF = "http://www.nih.gov/news/NIH-Record/archives.htm">http://www.nih.gov/news/NIH-Record/archives.htm</A>.]</small>
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</P>
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<P>
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MEDLINE, the world's largest medical database, covers the medical
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literature from 1966 to the present. When it began, it covered 239
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journals, and the <EM>NLM News</EM> bragged that it had "the capability of
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supporting up to 25 simultaneous users."
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</P>
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<P>
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On July 10 of this year, MEDLINE attained a major milestone when the
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10 millionth journal citation was added to the database. Today,
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MEDLINE lists references from about 4,300 of the world's most
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respected medical and scientific journals. Full text can be accessed for
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recent editions of several hundred of those publications. And the number
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of searches? More than half a million each day.
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</P>
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<P>
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"The occasion of the 10 millionth record in MEDLINE gives us an
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opportunity to step back and reflect on what a staggering amount of
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work this represents over the decades," commented NLM director Dr.
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Donald Lindberg. "We owe thanks to a corps of dedicated NLM staff
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who competently order and receive the journals, create the Medical
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Subject Headings, index the articles, enter the data into MEDLINE and
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maintain the database."
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</P>
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<P>
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In the early days of MEDLINE, NLM staff worked with typewriters and
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data forms to input citations into a punched card system. Today,
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computers have streamlined operations dramatically. Input is now mostly
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done by scanning articles, or by importing electronic data directly from
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publishers.
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</P>
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<P>
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And what was the 10 millionth citation in MEDLINE? The article,
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"Particulates from PTFE degradation in terrestrial and microgravity,"
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appearing in <EM>Aviation, Space and Environmental Medicine</EM>, 1999
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May;70(5):505-10. The article was indexed by an indexer working on an
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NLM contract using the interactive online indexing system from her home
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- another example of how things have changed since MEDLINE began.
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As a result of NLM's cooperation with NASA, another recent
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development, this citation also appears in SPACELINE, another of the
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library's family of databases, since it provides information on the possible
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breakdown of polytetrafluoroethylene-coated wires in spacecraft.
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</P>
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<P>
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Originally, MEDLINE citations were updated once a month. Today,
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MEDLINE is updated weekly and the bibliographic information for
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not-yet-indexed citations is entered daily into PubMed, NLM's retrieval
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engine for searching MEDLINE.
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</P>
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<P>
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With the launch of free MEDLINE on the World Wide Web in June
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1997, usage has skyrocketed. In the "MEDLINE for a fee" days, the
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database reached a high point of 7 million searches annually. For "free
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MEDLINE," the figure has already reached 16 million searches per
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month, a number that continues to grow.
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</P>
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<P>
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"Now that so much more medical information is freely available to the
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public via the Internet and the Web," noted Lindberg, "the MEDLINE
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core of information takes on new importance and even greater relevance
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to the health of the public than when the system began with record
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number one."
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</P>
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MEDLINE
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Article reprinted from the September 7, 1999 issue of NIH Record. 1999 Sep-Oct:e4
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10 millionth journal citation added to MEDLINE. 1999 Sep-Oct:e4
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<A HREF = "/pubs/techbull/so99/so99_million.html">Table of contents</A>
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