Fig. 2From: The efficacy of Bifidobacterium quadruple viable tablet in the treatment of diarrhea predominant irritable bowel syndrome: protocol for a randomized, double-blind, placebo-controlled, multicenter trialStudy schematic diagram. IBS, irritable bowel syndrome; HAMA, Hamilton Anxiety Scale; HAMD, Hamilton Depression Scale; IBS-QOL, IBS-Quality of Life Questionnaire; ECG, electrocardiogramBack to article page