<!-- NLMMedlineCitation DTD   

     Comments and suggestions are welcome.
     January 1, 2008
     
          
   NOTE:  The use of "Medline" in a DTD or element name does not mean the record 
    represents a citation from a Medline-selected journal.  When the NLM DTDs and 
    XML elements were first created, MEDLINE records were the only data exported. 
    Now NLM exports citations other than MEDLINE records using these tools. To 
    minimize unnecessary disruption to users of the data and tools, NLM has
    retained the original DTD and element names (e.g., NLMMedline DTD, MedlineTA,
    MedlineJournalInfo)).       
       
  * = 0 or more occurrences (optional element, repeatable)
  ? = 0 or 1 occurrences (optional element, at most 1)
  + = 1 or more occurrences (required element, repeatable)
  | = choice, one or the other but not both 
  no symbol = required element
-->
<!-- ================================================================= -->
<!--   Revision Notes Section 

The following changes were made in the nlmmedlinecitation_080101.dtd:

     a. Changed entity reference from "nlmsharedcatcit_070101.dtd" 
             to: "nlmsharedcatcit_080101.dtd" 
     
     b. Added entity EIdType with doi and pii values
  
   
  
     Historic Revision notes for previous versions of NLMMedlineCitation DTD
     See:
     http://www.nlm.nih.gov/databases/dtd/history_dtd_medlinecitation.html

 -->
<!-- ================================================================= -->
<!-- external DTD entities -->
<!ENTITY % EIdType "(doi | pii) #REQUIRED">
<!-- ================================================================= -->
<!-- internal DTD entities -->
<!ENTITY % Owner "(NLM | NASA | PIP | KIE | HSR | HMD | SIS | NOTNLM)">
<!ENTITY % Ref.template "(RefSource,
                          PMID?, Note?)">
<!ENTITY % PubModel "(Print | Print-Electronic | Electronic | Electronic-Print) #REQUIRED">
<!ENTITY % Source "(NASA | KIE | PIP | POP | ARPL | CPC |
                    IND | CPFH | CLML | IM | SGC | NRCBL | QCICL | QCIM) #REQUIRED">
<!ENTITY % Status "(Completed | In-Process | PubMed-not-MEDLINE |
                    In-Data-Review | Publisher | MEDLINE | OLDMEDLINE) #REQUIRED">
<!ENTITY % Type "(AAMC | AIDS | KIE | PIP | NASA | Consumer) #REQUIRED">
<!-- ================================================================= -->
<!-- ================================================================= -->
<!-- Reference to Where the NLM Common DTD via NLMSharedCatCit DTD is located  -->
<!ENTITY % NlmSharedCatCit PUBLIC "-//NLM//DTD SharedCatCit, 1st January 2008//EN" 
"nlmsharedcatcit_080101.dtd" >  
%NlmSharedCatCit;
<!-- =================================================================  -->
<!-- This is the top level element for MedlineCitation -->
<!ELEMENT MedlineCitation (%NlmDcmsID.Ref;, %PMID.Ref;, %DateCreated.Ref;, DateCompleted?,
                           DateRevised?, Article, MedlineJournalInfo, ChemicalList?, 
                           CitationSubset*, CommentsCorrections?, GeneSymbolList?, 
                           MeshHeadingList?, NumberOfReferences?, PersonalNameSubjectList?,
                           OtherID*, OtherAbstract*, KeywordList*, SpaceFlightMission*, 
                           InvestigatorList?, GeneralNote*)>
<!ATTLIST MedlineCitation
	Owner %Owner; "NLM"
	Status %Status;
>
<!ATTLIST Article
          PubModel %PubModel;
>
<!-- End of MedlineCitation group -->
<!-- ================================================================= -->
<!--             Further Definition of NLM Tags         -->
<!ELEMENT CitationSubset (#PCDATA)>
<!ELEMENT CommentIn (%Ref.template;)>
<!ELEMENT CommentOn (%Ref.template;)>
<!ELEMENT CommentsCorrections (CommentOn*, CommentIn*, ErratumIn*, ErratumFor*,
                               PartialRetractionIn*, PartialRetractionOf*,
                               RepublishedFrom*, RepublishedIn*, RetractionOf*,
                               RetractionIn*, UpdateIn*, UpdateOf*, 
                               SummaryForPatientsIn*, OriginalReportIn*, ReprintOf*, ReprintIn*)>
<!ELEMENT ErratumFor (%Ref.template;)>
<!ELEMENT ErratumIn (%Ref.template;)>
<!ATTLIST GeneralNote
	Owner %Owner; "NLM"
>
<!ELEMENT GeneSymbol (#PCDATA)>
<!ELEMENT GeneSymbolList (GeneSymbol+)>
<!ELEMENT NlmDcmsID (#PCDATA)>
<!ELEMENT Note (#PCDATA)>
<!ELEMENT NumberOfReferences (#PCDATA)>
<!ELEMENT OriginalReportIn (%Ref.template;)>
<!ELEMENT PartialRetractionIn (%Ref.template;)>
<!ELEMENT PartialRetractionOf (%Ref.template;)>
<!ELEMENT RefSource (#PCDATA)>
<!ELEMENT ReprintIn (%Ref.template;)>
<!ELEMENT ReprintOf (%Ref.template;)>
<!ELEMENT RepublishedFrom (%Ref.template;)>
<!ELEMENT RepublishedIn (%Ref.template;)>
<!ELEMENT RetractionIn (%Ref.template;)>
<!ELEMENT RetractionOf (%Ref.template;)>
<!ELEMENT SummaryForPatientsIn (%Ref.template;)>
<!ELEMENT UpdateIn (%Ref.template;)>
<!ELEMENT UpdateOf (%Ref.template;)>
<!-- ================================================================= -->
