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:Consistent with previous reports (Korobova et al., 2013, 2014), we found that overexpressing INF2 A149 resulted in significant shortening of mitochondria (Figure 6C,E; A149 alone).
Category: