<!-- NLM MedlineCitationSet DTD

     This is the DTD which NLM has written for Internal and External Use.
     January 1, 2013
      
     **THIS IS THE FORTHCOMING DTD FOR 2013 NOT CURRENTLY IN USE.  SEE        http://www.nlm.nih.gov/databases/dtd/nlmmedlinecitationset_120101.dtd 
     FOR THE NLM MEDLINECITATIONSET DTD DATED JANUARY 1, 2012 CURRENTLY IN USE.**    
    
         
     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., NLMMedlineCitationSet, 
     MedlineTA, MedlineJournalInfo)).  

     NOTE:  StartPage and EndPage in Pagination element and NameID in Author
     and Investigator elements are not currently used; are reserved for future use.  
                

        * = 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:
  
        a. Changed nlmmedlinecitationset_120101.dtd to
           nlmmedlinecitationset_130101.dtd. 
        b. Added Language attribute to OtherAbstract. 
        c. Changed NameID Element to Identifier Element.

See http://www.nlm.nih.gov/databases/dtd/history_dtd_nlmmedline.html for historic Revision Notes for previous versions of NLMMedlineCitationSet DTD.
-->
<!-- ====================================================================== -->
<!ENTITY % format	" b | i | sup | sub | u " >
<!ENTITY % text             "(#PCDATA | %format;)*" >
<!ELEMENT b		%text; > <!-- bold -->
<!ELEMENT i		%text; > <!-- italic -->
<!ELEMENT sup	%text; > <!-- superscript -->
<!ELEMENT sub	%text; > <!-- subscript -->
<!ELEMENT u		%text; > <!-- underline -->
<!-- ================================================================= -->
<!ELEMENT	MedlineCitationSet (MedlineCitation*, DeleteCitation?)>
<!ELEMENT	MedlineCitation (PMID, DateCreated, DateCompleted?, DateRevised?,
                Article, MedlineJournalInfo, ChemicalList?,SupplMeshList?,
                CitationSubset*, CommentsCorrectionsList?, GeneSymbolList?,
                MeshHeadingList?,NumberOfReferences?, PersonalNameSubjectList?,
                OtherID*, OtherAbstract*, KeywordList*, SpaceFlightMission*, 
                InvestigatorList?, GeneralNote*)>
<!ATTLIST	MedlineCitation 
                Owner  (NLM | NASA | PIP | KIE | HSR | HMD | NOTNLM) "NLM"
		Status (Completed | In-Process | PubMed-not-MEDLINE | 
                        In-Data-Review | Publisher | MEDLINE | 
                        OLDMEDLINE) #REQUIRED
                VersionID CDATA #IMPLIED
                VersionDate CDATA #IMPLIED>
<!ELEMENT	Abstract (AbstractText+,CopyrightInformation?)>
<!ELEMENT	AbstractText %text;>
<!ATTLIST       AbstractText
                Label CDATA #IMPLIED
                NlmCategory (UNLABELLED | BACKGROUND | OBJECTIVE | METHODS |
                             RESULTS | CONCLUSIONS) #IMPLIED>
<!ELEMENT	AccessionNumber (#PCDATA)>
<!ELEMENT	AccessionNumberList (AccessionNumber+)>
<!ELEMENT	Acronym (#PCDATA)>
<!ELEMENT	Affiliation %text;>
<!ELEMENT	Agency (#PCDATA)>
<!ELEMENT	Article (Journal,ArticleTitle,((Pagination, ELocationID*) | 
                        ELocationID+),Abstract?, Affiliation?, AuthorList?, 
                        Language+, DataBankList?, GrantList?,PublicationTypeList, 
                        VernacularTitle?, ArticleDate*)>
<!ATTLIST	Article 
                PubModel (Print | Print-Electronic | Electronic | 
                          Electronic-Print) #REQUIRED>
<!ELEMENT	ArticleDate (Year,Month,Day)>
<!ATTLIST	ArticleDate DateType CDATA  #FIXED "Electronic">
<!ELEMENT	ArticleTitle %text;>
<!ELEMENT	Author (((LastName, ForeName?, Initials?, Suffix?) | 
                         CollectiveName),Identifier*)>
<!ATTLIST	Author ValidYN (Y | N) "Y">
<!ELEMENT	AuthorList (Author+)>
<!ATTLIST	AuthorList CompleteYN (Y | N) "Y">
<!ELEMENT	Chemical (RegistryNumber,NameOfSubstance)>
<!ELEMENT	ChemicalList (Chemical+)>
<!ELEMENT	CitationSubset (#PCDATA)>
<!ELEMENT	CollectiveName %text;>
<!ELEMENT	CommentsCorrections (RefSource,PMID?,Note?)>
<!ATTLIST       CommentsCorrections 
                RefType (CommentOn | CommentIn | ErratumIn | ErratumFor | 
                PartialRetractionIn | PartialRetractionOf | RepublishedFrom |
                RepublishedIn | RetractionOf | RetractionIn | UpdateIn |
                UpdateOf | SummaryForPatientsIn | OriginalReportIn |
                ReprintOf | ReprintIn | Cites) #REQUIRED >
<!ELEMENT	CommentsCorrectionsList (CommentsCorrections+)>
<!ELEMENT	CopyrightInformation (#PCDATA)>
<!ELEMENT	Country (#PCDATA)>
<!ELEMENT	DataBank (DataBankName, AccessionNumberList?)>
<!ELEMENT	DataBankList (DataBank+)>
<!ATTLIST	DataBankList CompleteYN (Y | N) "Y">
<!ELEMENT	DataBankName (#PCDATA)>
<!ELEMENT	DateCompleted (Year,Month,Day)>
<!ELEMENT	DateCreated (Year,Month,Day)>
<!ELEMENT	DateRevised (Year,Month,Day)>
<!ELEMENT	Day (#PCDATA)>
<!ELEMENT	DescriptorName (#PCDATA)>
<!ATTLIST	DescriptorName 
                MajorTopicYN (Y | N) "N"
                Type (Geographic) #IMPLIED>
<!ELEMENT	ELocationID (#PCDATA)>
<!ATTLIST	ELocationID EIdType (doi | pii) #REQUIRED 
                ValidYN  (Y | N) "Y">
<!ELEMENT       EndPage (#PCDATA)>
<!ELEMENT	ForeName (#PCDATA)>
<!ELEMENT	GeneSymbol (#PCDATA)>
<!ELEMENT	GeneSymbolList (GeneSymbol+)>
<!ELEMENT	GeneralNote (#PCDATA)>
<!ATTLIST	GeneralNote Owner (NLM | NASA | PIP | KIE | HSR | HMD) "NLM">
<!ELEMENT	Grant (GrantID?, Acronym?, Agency, Country)>
<!ELEMENT	GrantID (#PCDATA)>
<!ELEMENT	GrantList (Grant+)>
<!ATTLIST	GrantList CompleteYN (Y | N) "Y">
<!ELEMENT       Identifier (#PCDATA)>
<!ATTLIST       Identifier 
                Source CDATA #REQUIRED >
<!ELEMENT	ISOAbbreviation (#PCDATA)>
<!ELEMENT	ISSN (#PCDATA)>
<!ATTLIST	ISSN IssnType  (Electronic | Print) #REQUIRED>
<!ELEMENT       ISSNLinking (#PCDATA)>
<!ELEMENT	Initials (#PCDATA)>
<!ELEMENT	Investigator (LastName,ForeName?, Initials?,Suffix?,Identifier*,Affiliation?)>
<!ATTLIST	Investigator ValidYN (Y | N) "Y">
<!ELEMENT	InvestigatorList (Investigator+)>
<!ELEMENT	Issue (#PCDATA)>
<!ELEMENT	Journal (ISSN?, JournalIssue, Title?, ISOAbbreviation?)>
<!ELEMENT	JournalIssue (Volume?, Issue?, PubDate)>
<!ATTLIST	JournalIssue CitedMedium (Internet | Print) #REQUIRED>
<!ELEMENT	Keyword %text;>
<!ATTLIST	Keyword MajorTopicYN (Y | N) "N">
<!ELEMENT	KeywordList (Keyword+)>
<!ATTLIST	KeywordList Owner (NLM | NLM-AUTO | NASA | PIP | KIE | NOTNLM | HHS) "NLM">
<!ELEMENT	Language (#PCDATA)>
<!ELEMENT	LastName (#PCDATA)>
<!ELEMENT	MedlineDate (#PCDATA)>
<!ELEMENT	MedlineJournalInfo (Country?, MedlineTA, NlmUniqueID?,ISSNLinking?)>
<!ELEMENT       MedlinePgn (#PCDATA)>
<!ELEMENT	MedlineTA (#PCDATA)>
<!ELEMENT	MeshHeading (DescriptorName, QualifierName*)>
<!ELEMENT	MeshHeadingList (MeshHeading+)>
<!ELEMENT	Month (#PCDATA)>

<!ELEMENT	NameOfSubstance (#PCDATA)>
<!ELEMENT	NlmUniqueID (#PCDATA)>
<!ELEMENT	Note (#PCDATA)>
<!ELEMENT	NumberOfReferences (#PCDATA)>
<!ELEMENT	OtherAbstract (AbstractText+,CopyrightInformation?)>
<!ATTLIST	OtherAbstract Type (AAMC | AIDS | KIE | PIP | 
                                    NASA | Publisher) #REQUIRED
                              Language CDATA "eng">
<!ELEMENT	OtherID (#PCDATA)>
<!ATTLIST	OtherID Source (NASA | KIE | PIP | POP | ARPL | CPC | 
                                IND | CPFH | CLML | NRCBL | NLM) #REQUIRED>
<!ELEMENT	PMID (#PCDATA)>
<!ATTLIST       PMID Version CDATA #REQUIRED>
<!ELEMENT	Pagination ((StartPage, EndPage?, MedlinePgn?) | MedlinePgn)>
<!ELEMENT	PersonalNameSubject (LastName,ForeName?, Initials?,Suffix?)>
<!ELEMENT	PersonalNameSubjectList (PersonalNameSubject+)>
<!ELEMENT	PubDate ((Year, ((Month, Day?) | Season)?) | MedlineDate)>
<!ELEMENT	PublicationType (#PCDATA)>
<!ELEMENT	PublicationTypeList (PublicationType+)>
<!ELEMENT	QualifierName (#PCDATA)>
<!ATTLIST	QualifierName MajorTopicYN (Y | N) "N">
<!ELEMENT	RefSource (#PCDATA)>
<!ELEMENT	RegistryNumber (#PCDATA)>
<!ELEMENT	Season (#PCDATA)>
<!ELEMENT	SpaceFlightMission (#PCDATA)>
<!ELEMENT       StartPage (#PCDATA)>
<!ELEMENT	Suffix %text;>
<!ELEMENT       SupplMeshList (SupplMeshName+)>
<!ELEMENT       SupplMeshName (#PCDATA)>
<!ATTLIST       SupplMeshName Type (Disease | Protocol) #REQUIRED>
<!ELEMENT	Title (#PCDATA)>
<!ELEMENT	VernacularTitle %text;>
<!ELEMENT	Volume (#PCDATA)>
<!ELEMENT	Year (#PCDATA)>
<!ELEMENT	DeleteCitation (PMID+)>
