A collection of (compressed) index database files suitable for use with
Centrifuge, Kraken1 and Kraken2 that can be used to classify metagenomes
using the NCBI_r88_Human17k index, as described in Meric, Wick et al. (2019)
manuscript. More information and details at: https://github.com/rrwick/Metagenomics-Index-Correction