Figure 4From: Oh my aching gut: irritable bowel syndrome, Blastocystis, and asymptomatic infectionComparison of the prevalence of IBS and chronic abdominal pain to the frequency of detection of Blastocystis in Japan[22, 30], Canada[31, 32], United States[14, 33], Mexico[21, 34], and Brazil[22, 35].Back to article page