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 found in study done by Wild et al.[25] They found that women with PCOS showed lower HDL-C levels, higher LDL/HDL ratios, and higher TG levels than regularly menstruating women.
Category: