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:During one study visit, patients were interviewed, examined clinically and assessed with FRDA rating scale (FARS) [7], including staging of global functioning, questions on
Ygland et al: Friedreich ataxia p.R165P point mutation 4
activities of daily living (ADL), neurological examination as well as the 9-hole peg test and the PATA speech test.
Category: