Table 2. Relative abundance of the main four bacterial phyla.

Phyla	Mean	Median	Max	Min
Proteobacteria	15.4%	12.1%	52.0%	0.04%
Actinobacteria	30.2%	30.3%	91.4%	0.1%
Firmicutes	37.7%	31.7%	97.4%	1.9%
Bacteroidetes	16.3%	0.3%	78.6%	Not detected