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:Brain regions were identified using theWake Forest PickAtlas software (Wake Forest University, USA; www.fmri.wfubmc. edu) and the Talairach Atlas labels (Lancaster et al. 2000) as implemented in the xjView toolbox (http://www.alivelearn. net/xjview).
Category: