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 agree with previous
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reports showing that a single exposure to dexamethasone rapidly stimulated Sgk1 mRNA in cell cultures (Wang et al., 2007) and that a single injection of DEX in vivo resulted in increased Fkbp5 mRNA in mice (Scharf et al., 2011).
Category: