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:We suggest that this approach using DE-Seq2 or similar software, paired with phylogenetic studies of regulatory divergence (e.g., Coolon et al 2014) will continue the progress toward a broad, comparative understanding of regulatory evolution.
Category: