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:For Bd, initial gene calls were predicted using a combination of FGENESH30, GENEID31, EST-based genes and manual annotation; this initial set (previously made available on the Broad Institute website at https://www.broadinstitute.org/annotation/ genome/batrachochytrium_dendrobatidis/MultiHome.html) was improved using 50,374,154 paired-end reads (10.1 Tb) from RNA sequenced on three lanes of Illumina HiSeq from in vitro cultures (Supplementary Table 1), as well as 1,390 transcripts (800 kb) from Bd infection (described in detail below).
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