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 accordance with our results, the exogenous application of BRs has been shown to lead inhibition of root growth (Schumacher and Chory 2000), which was also previously reported for Arabidopsis (Clouse et al. 1993) and tomato (Dhaubhadel et al. 1999).
Category: