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:DOI: 10.7554/eLife.08828 1 of 27
mitochondrial division (Friedman et al., 2011; Korobova et al., 2013; Murley et al., 2013; Korobova et al., 2014).
Category: