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:[13] found lower distress in those partners who had had greater comfort from sharing their concerns about BRCA1/2 testing and who had felt that their * Correspondence to: Department of Medical Oncology, University Medical Centre Utrecht, PO Box 85060, 3508 AB Utrecht, The Netherlands.
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