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:These data are in agreement with reports of clinical cytauxzoonosis in domestic cats which have only been reported from Southeastern, Midwestern, and Mid-Atlantic states and not from California, Colorado, North Dakota, Ohio, or West Virginia.
Category: