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:This result confirms our previous data on the inhibition by PD98059 of LPC-induced AR and related P-Tyr (de Lamirande and Gagnon, 2002) but diverge from those of Luconi et al. (1998).
Category: