HUMAN GRCh37
No 'chr' prefix on chromosome names.

The reference files contained in reference.tar.gz are:
  - genome.fa
  - genome.fa.fai
  - SnpGcCorrections.tsv

The SnpGcCorrections.tsv file was generated from the 1000 genomes phase 3 SNP set
as described here:
  - https://github.com/cancerit/ascatNgs/wiki/Human-reference-files-from-1000-genomes-VCFs