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:Thus, the rest were homology modeled using the I-TASSER suite (Roy et al., 2010) with the template macrocypin 1a and were submitted to the Protein Model Database (PMDB) server which can be accessed through http://mi.caspur.it/PMDB/.
Category: