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Development of a validated patient-reported symptom metric for pediatric Eosinophilic Esophagitis: qualitative methods

James P Franciosi*, Kevin A Hommel, Charles W DeBrosse, Allison B Greenberg, Alexandria J Greenler, J Pablo Abonia, Marc E Rothenberg and James W Varni

BMC Gastroenterology 2011, 11:126  doi:10.1186/1471-230X-11-126