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:…exercise-induced breast pain (Bridgman et al., 2010; Scurr et al., 2010), and consequently breast biomechanics research has made recommendations to wear a high level of breast support (sports bra) when exercising to reduce breast pain (Bridgman et al., 2010; Scurr et al., 2010; White et al., 2009).
Category: