Exam 2: Recurrent Gastrointestinal Bleeding After Negative Upper Endoscopy and Colonoscopy
PII: S1542-3565(09)00587-4
doi:10.1016/j.cgh.2009.06.014
© 2009 AGA Institute. Published by Elsevier Inc. All rights reserved.
PII: S1542-3565(09)00587-4
doi:10.1016/j.cgh.2009.06.014
© 2009 AGA Institute. Published by Elsevier Inc. All rights reserved.