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:Other scores were developed based on data of patients included in registries and clinical trials, such as the ACC-NCDR (American College of Cardiology-National Cardiovascular Data Registry) registry (7), GUSTO-I (Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries) trial (8), and the SHOCK (SHould we emergently revascularize Occluded Coronaries for cardiogenic shock) trial and registry (9).
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