Description:Shotgun MetaPHlAn Community Profiling: Reads generated by Illumina wgs sequencing were analyzed by MetaPhlAn, which infers a table of relative abundances for all taxonomic levels (from phyla to species) for bacteria and archaea. The MetaPhlAn classifier compares each read to a pre-computed catalog of unique clade-specific markers in order to identify high-confidence matches. The classifier normalizes the total number of reads in each clade by the nucleotide length of its markers and provides the relative abundance of each taxonomic unit. Microbial reads belonging to clades with no sequenced genomes available are reported as an "unclassified" subclade of the closest ancestor with available sequence data.