OXT and autism: ASD—decrease of the Bacteroidetes/Firmicutes ratio and elevation of the amount of LactobacillusDesulfovibrio decreased postprobioticDesulfovibrio spp. associated with the severity of autism (ADI) restricted/repetitive behavior subscale scoreProbiotic significantly decreased fecal TNFα levels in ASDNo correlation between plasma levels of oxytocin, testosterone, DHEA-S and fecal microbiota