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:Participants The present study is an analysis of previously gathered data on 58 white men and 49 premenopausal women, without overt disease, who were recruited from the general public and had participated in previously published exercise- and/or diet-induced weight loss studies at Queen’s University (Kingston, ON, Canada) [7, 23–25].
Category: