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:In addition to 2 related studies [22,23] shown in Table 1, 13 studies [21,24-35] (Table 2) addressed the effect of Ramadan fasting on maternal health as the primary or the secondary outcome variables.
Category: