Relative amounts (n-fold difference) of measured bacteria ( Bacteroides sp., C. leptum , C. coccoides, Bifidobacterium sp., Enterobactericaea , Streptococcus sp. and Lactobacillus sp.) in fecal samples of controls and rectum of autopsy cases. Individual values are presented as boxes, median values with horizontal lines. Comparisons over the groups were calculated using non-parametric Kruskal-Wallis test.