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:Microsatellite DNA genotypes were analyzed using Bayesian clustering in structure 2.3.2 (Pritchard et al. 2000; Falush et al. 2003, 2007) using the complete set of 713 individual moths described earlier, including known adult individuals and larvae sampled from both
2009 Blackwell Publishing…
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