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Ahmed, Iftikhar, Rosemary Greenwood, Ben de Lacy Costello, Norman M. Ratcliffe, και Chris S. Probert. An Investigation of Fecal Volatile Organic Metabolites in Irritable Bowel Syndrome. Public Library of Science, 2013.

Ahmed, Iftikhar, et al. An Investigation of Fecal Volatile Organic Metabolites in Irritable Bowel Syndrome. Public Library of Science, 2013.