Attribute: MajorTopicYN
Indicates whether or not the MeSH heading captures one of the more significant points in the publication.
In <QualifierName>
MajorTopicYN (Y|N) "N"
In <Keyword>
MajorTopicYN (Y|N) "N"
In <DescriptorName>
MajorTopicYN (Y|N) "N"