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:The tests were as follows: the C-MMSE [13], the LMT [18], the RCFT [19], the Boston Naming Test (the 30-item version) [20,21], the Animal Verbal Fluency Test [22], the Symbol Digit Modalities Test [23], the Trail Making Test‚Äì
Category: