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:…of people and evaluations of self are associated with medial prefrontal cortex (MPFC) and posterior cingulate cortex (PCC) activity (e.g., Vogeley et al. 2001; Harris et al. 2005; Mitchell et al. 2005; Ochsner et al. 2005; Lindner et al. 2008; Krienen et al. 2010 but see Kelley et al. 2002).
Category: