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:…and Medical Services, Faculty of Pharmacy, Kermanshah University of Medical Sciences, PO Box 67346-67149, Kermanshah, Iran
weight loss, amyloidosis, and osteopenia, all of which are a result of systemic inflammation (Hendrickson et al. 2002; Levine and Burakoff 2011; Schmidt et al. 2012).
Category: