Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Our results with the lesioned rats suggest that [18F]FEOBV may be useful for detecting cortical cholinergic denervations such as those known to be present in AD or dementia with Lewy Bodies (DLB) (Dournaud et al., 1995; Prohovnik et al., 2006).
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