biomart_ensembl_entrez_mapping.txt was created using:
https://biomart.genenames.org/martform/#!/default/HGNC?datasets=hgnc_gene_mart&attributes=hgnc_gene__ensembl_gene__ensembl_gene_id_104%2Chgnc_gene__ncbi_gene__gene_id_1026

# b37ToHg38.over.chain
source: https://raw.githubusercontent.com/broadinstitute/gatk/master/scripts/funcotator/data_sources/gnomAD/b37ToHg38.over.chain
context: https://gatk.broadinstitute.org/hc/en-us/articles/360035890711-GRCh37-hg19-b37-humanG1Kv37-Human-Reference-Discrepancies#additional

# hg19ToHg38.over.chain.gz
source: https://hgdownload.soe.ucsc.edu/goldenPath/hg19/liftOver/hg19ToHg38.over.chain.gz

# chm13v2-hg38.over.chain.gz
source: https://hgdownload.soe.ucsc.edu/goldenPath/hs1/liftOver/chm13v2-hg38.over.chain.gz