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:Similar results were also observed by Potter et al. (1996) and Balmir et al. (1996) who reported that weaning hamsters consumed 6 to 7.5 gm of food daily that contained isolated soy protein.
Category: