Ubiquity was defined based on the presence of related OTUs in (i) >90% of the 30 biopsy samples, and (ii) were present in at least one of biopsy duplicates retrieved at a particular colonic site of th
The best model of the variables was selected using a stepwise method in generalized linear model (GLM) analysis, and the pseudo R2 and Akaike information criterion (AIC) values are reported for the be
