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|CommentIn|CommentOn|CorrectedandRepublishedIn|CorrectedandRepublishedFrom|ErratumIn|ErratumFor|ExpressionOfConcernIn|ExpressionOfConcernFor|RepublishedIn|RepublishedFrom|RetractedandRepublishedIn|RetractedandRepublishedFrom|RetractionIn|RetractionOf|UpdateIn|UpdateOf|SummaryForPatientsIn|OriginalReportIn|ReprintIn|ReprintOf|Cites) #REQUIRED