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 high correlation with the medial temporal lobe, by means of atrophy
224 Chapter I
(Diamond et al., 2007; Sánchez-Benavides et al., 2010, 2014; Sarazin et al., 2010; Wenger, Negash, Petsersen, & Petersen, 2011), hypoperfusion (Habert et al., 2011) and hypometabolism (Van Der Gucht et al.,…
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