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:reported that increased eNOS Thr495 phosphorylation leads to decreased NO production and vasodilation and is associated with hypertension.(28) –32 Whether IL-17 affects eNOS Thr495 phosphorylation and endothelial function is unknown.
Category: