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 presence of increased TG in the lipoprotein is in good agreement with the results of previous studies that indicated that TG levels are an important and independent predictor of CHD and stroke risk in the Asia-Pacific region (Asia pacific cohort studies collaboration, 2004).
Category: