F18
The hypervariable V3-V4 region of the bacterial 16S rRNA gene was amplified from the extracted DNA for high-throughput sequencing. Amplification was performed using the primers: forward primer (5-TCGTCGGCAGCGTCAGATGTGTATAAGAGACAGCCTACGGGNGGCWGCAG-3), reverse primer (5-GTCTCGTGGGCTCGGAGATGTGTATAAGAGACAGGACTACHVGGGTATCTAATCC-3.