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:A moderate level of CB1-immunoreactivity was found in the lateral and basomedial nucleus, which is coherent with previous results (McDonald and Mascagni, 2001; Katona et al, 2001).
Category: