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:To confirm some identities, and to compare splicing patterns between guinea pig and human, some groups were analyzed by BLAT analysis (with the human genome) [43] and visualization in EyeBrowse, an eyecentric version of the UCSC Genome Browser [44,45].
Category: