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:We also found that most spa t437 isolates belonged to SCCmecIV, SCCmecVT, and ST59, similar to the results of a previous studies on CA-MRSA [7,49,50].
Category: