Presence and Average Relative Abundance by Ulcer Etiology with Results of Bray-Curtis Dissimilarity Comparison.

*Other group member not identified in bacterial community comparison was Hydrogenoanaerobacterium. ̂Other group member not identified in bacterial community comparison was Ureaplasma.+Groups identified by hierarchical clustering (Figure 1). Bacteria without group numbers did not cluster with any other bacteria, as defined as a Spearman rank correlation coefficient >0.5.