PAM	Partitioning Around Medoids.
C–H index	Calinski–Harabasz index.
LEfSe	Linear discriminant analysis effect size.
LOSO-CV	Leave-One-Subject-Out Cross-Validation.
FDR	False discovery rate.
SCFAs	Short-chain fatty acids.
BSS	Bristol stool form scale.
PCoA	Principal coordinate analysis.
NMDS	Nonmetric multidimensional scaling.
ETB	Bacteroides enterotype.
ETF	Faecalibacterium enterotype.