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 identified three major categories of barriers that, if resolved, would facilitate HIT use: (1) lack of local patient-level clinical data in VA-wide databases; (2) lack of VA-wide data in a standardized and analyzable format; (3) gaps in capture of clinical data in the EHR.
Category: