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(A) The comparison of symptom severity scores in lower gastrointestinal symptoms between IBS patients with LBT (+) and LBT (-) for hydrogen. There were no significant differences in the severity scores of IBS symptoms between the groups. (B) The comparison of symptom severity scores in lower gastrointestinal symptoms between IBS patients with LBT (+) and LBT (-) for methane. There were no significant differences in the severity scores of IBS symptoms between the groups.
