<!-- NLM MedlineCitationSet DTD

     This is the DTD which NLM has written for Internal and External Use.
     January 1, 2015
     
    **THIS IS THE FORTHCOMING DTD FOR 2015 NOT CURRENTLY IN USE.  SEE http://www.nlm.nih.gov/databases/dtd/nlmmedlinecitationset_140101.dtd FOR THE NLMMedlineCitationSet DTD DATED JANUARY 1, 2014 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 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
-->
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<!--             Revision Notes Section

  The following changes were made:
  
a. Changed nlmmedlinecitationset_140101.dtd to nlmmedlinecitationset_150101.dtd. 
b. Added UI attribute to DescriptorName, QualifierName, NameOfSubstance, SupplMeshName and PublicationType elements.
c. Added new element AffiliationInfo to Author and Investigator elements.
d. Moved Affliliation and Identifier elements to new optional and repeatable envelope element AffiliationInfo.
e. Removed AbstractText NlmCategory attribute valid value UNLABELLED.
f. Added new CommentsCorrections RefType attribute valid values AssociatedDataset and AssociatedPublication. 
                    
See http://www.nlm.nih.gov/databases/dtd/history_dtd_nlmmedline.html for historic Revision Notes for previous versions of NLMMedlineCitationSet DTD.
-->
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<!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 (BACKGROUND | OBJECTIVE | METHODS | RESULTS | CONCLUSIONS | UNASSIGNED) #IMPLIED>
<!ELEMENT	AccessionNumber (#PCDATA)>
<!ELEMENT	AccessionNumberList (AccessionNumber+)>
<!ELEMENT	Acronym (#PCDATA)>
<!ELEMENT	Affiliation %text;>
<!ELEMENT	AffiliationInfo (Affiliation, Identifier*)>
<!ELEMENT	Agency (#PCDATA)>
<!ELEMENT	Article (Journal,ArticleTitle,((Pagination, ELocationID*) | ELocationID+),Abstract?,AuthorList?, Language+, DataBankList?, GrantList?,PublicationTypeList, VernacularTitle?, ArticleDate*)>
<!ATTLIST	Article 
		PubModel (Print | Print-Electronic | Electronic | Electronic-Print | Electronic-eCollection) #REQUIRED>
<!ELEMENT	ArticleDate (Year,Month,Day)>
<!ATTLIST	ArticleDate DateType CDATA  #FIXED "Electronic">
<!ELEMENT	ArticleTitle %text;>
<!ELEMENT	Author (((LastName, ForeName?, Initials?, Suffix?) | CollectiveName), Identifier*, AffiliationInfo*)>
<!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 (AssociatedDataset | AssociatedPublication | 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
		UI CDATA #REQUIRED>
<!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*, AffiliationInfo*)>
<!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)>
<!ATTLIST	NameOfSubstance 
		UI CDATA #REQUIRED>
<!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)>
<!ATTLIST	PublicationType 
		UI CDATA #REQUIRED>
<!ELEMENT	PublicationTypeList (PublicationType+)>
<!ELEMENT	QualifierName (#PCDATA)>
<!ATTLIST	QualifierName 
		MajorTopicYN (Y | N) "N"
		UI CDATA #REQUIRED>
<!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
		UI CDATA #REQUIRED>
<!ELEMENT	Title (#PCDATA)>
<!ELEMENT	VernacularTitle %text;>
<!ELEMENT	Volume (#PCDATA)>
<!ELEMENT	Year (#PCDATA)>
<!ELEMENT	DeleteCitation (PMID+)>