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:…glycoprotein that modulates interactions between
adherent cells and the extracellular matrix (ECM) via a host of cellular receptors, cytokines, growth
2
factors, matrix metalloproteinases (MMPs), and other components of the ECM (Bornstein et al., 2000; Calabro et al., 2014; Yang et al., 2000).
Category: