Attribute: RefType
Indicates the type of association between the citation and another publication, as well as the direction of the associated, for instance a comment on another publication or a retraction of another publication.
In <CommentsCorrections>
RefType (AssociatedDataset|AssociatedPublication|CommentOn|CommentIn|ErratumIn|ErratumFor|ExpressionOfConcernIn|ExpressionOfConcernFor|RepublishedFrom|RepublishedIn|RetractionOf|RetractionIn|UpdateIn|UpdateOf|SummaryForPatientsIn|OriginalReportIn|ReprintOf|ReprintIn|Cites) #REQUIRED