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:In this regard, TONSL is already known to participate in the repair of collapsed or stalled replication forks (Duro et al. 2010; O’Connell et al. 2010; O’Donnell et al. 2010; Piwko et al. 2010), which is also a known BRCA1 function (Pathania et al. 2011; Schlacher et al. 2012).
Category: