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:Also, in the light of studies (Mazza et al., 2001; Bosco et al., 2009a) to the effect that the deficit of mindreading in patients with schizophrenia affects certain components of ToM more heavily than others, we expected in AUD, but not in control subjects, that: (d) Second-order ToM would be more…
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