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:A poor performance on the FCSRT has also shown a high correlation with atrophy in the medial temporal lobe (Sánchez-Benavides et al., 2010; Sarazin et al., 2010) and was significantly associated with cerebrospinal fluid (CSF) AD-biomarkers (Wagner et al., 2012), increasing the validity of this…
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