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 importance of ICAM-1 to the recruitment of neutrophils in renal ischemia-reperfusion and in endotoxin-induced AKI has been demonstrated in animal models, so the relevance of this phenomenon is high (32, 70).
Category: