let b37 =
    create Name.b37
      ~metadata:"Provided by the Biokepi library"
      ~major_contigs:major_contigs_b37
      ~fasta:Location.(
          url "ftp://gsapubftp-anonymous@ftp.broadinstitute.org/bundle/2.8/b37/human_g1k_v37.fasta.gz"
          |> gunzip)
      ~dbsnp:Location.(url b37_dbsnp_url |> gunzip)
      (* Alternate?
         "ftp://ftp.ncbi.nlm.nih.gov/snp/organisms/human_9606/VCF/v4.0/00-All.vcf.gz"
      *)
      ~cosmic:Location.(url b37_cosmic_url)
      ~exome_gtf:Location.(url b37_exome_gtf_url |> gunzip)
      ~cdna:Location.(url b37_cdna_url |> gunzip)