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Clinical Trials Study
©The Author(s) 2015.
World J Gastroenterol. Jan 7, 2015; 21(1): 292-300
Published online Jan 7, 2015. doi: 10.3748/wjg.v21.i1.292
Figure 2
Figure 2 Percentage of variance of the birmingham irritable bowel syndrome symptom questionnaire items which is explained by the general and specific factors of the final bifactor model.


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